| Monday, April 9 |
| » Defeated Twins (0-1), 8-3 | Oakland-Alameda County Stadium (1-0) | 1-0 | |
| » W: Dave Stewart (1-0) L: Allan Anderson (0-1) S: Rick Honeycutt (1) | First | -- |
| Tuesday, April 10 |
| » Defeated Twins (0-2), 5-3 | Oakland-Alameda County Stadium (2-0) | 2-0 | Won 2 |
| » W: Bob Welch (1-0) L: Roy Smith (0-1) S: Dennis Eckersley (1) | First | -- |
| Wednesday, April 11 |
| » Lost to Twins (1-2), 3-0 | Oakland-Alameda County Stadium (2-1) | 2-1 | |
| » W: Kevin Tapani (1-0) L: Mike Moore (0-1) S: Rick Aguilera (1) | Second | ½ out |
| » Major-league debuts: Mike Bordick (Athletics) |
| Friday, April 13 |
| » Defeated Mariners (1-3), 15-7 | Kingdome (1-0) | 3-1 | |
| » W: Scott Sanderson (1-0) L: Scott Bankhead (0-1) | First | -- |
| Saturday, April 14 |
| » Defeated Mariners (1-4), 5-2 | Kingdome (2-0) | 4-1 | Won 2 |
| » W: Dave Stewart (2-0) L: Matt Young (0-1) S: Dennis Eckersley (2) | First | -- |
| Sunday, April 15 |
| » Defeated Mariners (1-5), 3-0 | Kingdome (3-0) | 5-1 | Won 3 |
| » W: Bob Welch (2-0) L: Brian Holman (1-1) S: Dennis Eckersley (3) | First | -- |
| Tuesday, April 17 |
| » Defeated Angels (5-3), 7-5 | Anaheim Stadium (1-0) | 6-1 | Won 4 |
| » W: Mike Norris (1-0) L: Mark Eichhorn (0-1) S: Dennis Eckersley (4) | First | -- |
| Wednesday, April 18 |
| » Defeated Angels (5-4), 3-1 | Anaheim Stadium (2-0) | 7-1 | Won 5 |
| » W: Scott Sanderson (2-0) L: Mike Witt (0-2) S: Gene Nelson (1) | First | -- |
| Thursday, April 19 |
| » Defeated Mariners (2-8), 5-2 | Oakland-Alameda County Stadium (3-1) | 8-1 | Won 6 |
| » W: Dave Stewart (3-0) L: Gary Eave (0-2) | First | -- |
| Friday, April 20 |
| » Lost to Mariners (3-8), 6-1 | Oakland-Alameda County Stadium (3-2) | 8-2 | |
| » W: Brian Holman (2-1) L: Bob Welch (2-1) | First | -- |
| Saturday, April 21 |
| » Defeated Mariners (3-9), 7-6 | Oakland-Alameda County Stadium (4-2) | 9-2 | |
| » W: Dennis Eckersley (1-0) L: Jerry Reed (0-1) | First | -- |
| Sunday, April 22 |
| » Lost to Mariners (4-9), 5-2 | Oakland-Alameda County Stadium (4-3) | 9-3 | |
| » W: Erik Hanson (1-0) L: Scott Sanderson (2-1) S: Mike Jackson (1) | First | -- |
| Tuesday, April 24 |
| » Defeated Orioles (7-7), 7-1 | Memorial Stadium (1-0) | 10-3 | |
| » W: Dave Stewart (4-0) L: Dave Johnson (2-1) | First | -- |
| Wednesday, April 25 |
| » Defeated Orioles (7-8), 4-3 | Memorial Stadium (2-0) | 11-3 | Won 2 |
| » W: Gene Nelson (1-0) L: Kevin Hickey (0-1) S: Dennis Eckersley (5) | First | -- |
| Thursday, April 26 |
| » Defeated Orioles (7-9), 6-4 | Memorial Stadium (3-0) | 12-3 | Won 3 |
| » W: Mike Moore (1-1) L: Jay Tibbs (0-2) S: Dennis Eckersley (6) | First | -- |
| Friday, April 27 |
| » Lost to Red Sox (9-7), 7-6 | Fenway Park (0-1) | 12-4 | |
| » W: Jeff Reardon (1-0) L: Gene Nelson (1-1) | First | -- |
| Saturday, April 28 |
| » Lost to Red Sox (10-7), 12-3 | Fenway Park (0-2) | 12-5 | Lost 2 |
| » W: Greg Harris (2-0) L: Curt Young (0-1) | First | -- |
| » Major-league debuts: Daryl Irvine (Red Sox) |
| Sunday, April 29 |
| » Defeated Red Sox (10-8), 1-0 | Fenway Park (1-2) | 13-5 | |
| » W: Dave Stewart (5-0) L: Roger Clemens (4-1) S: Dennis Eckersley (7) | First | -- |
| Monday, April 30 |
| » Defeated Yankees (7-10), 6-0 | Yankee Stadium (1-0) | 14-5 | Won 2 |
| » W: Bob Welch (3-1) L: Clay Parker (0-1) | First | -- |
| Tuesday, May 1 |
| » Defeated Yankees (7-11), 4-2 | Yankee Stadium (2-0) | 15-5 | Won 3 |
| » W: Mike Moore (2-1) L: Andy Hawkins (0-3) S: Dennis Eckersley (8) | First | -- |
| Wednesday, May 2 |
| » Defeated Yankees (7-12), 2-0 | Yankee Stadium (3-0) | 16-5 | Won 4 |
| » W: Scott Sanderson (3-1) L: Tim Leary (1-2) S: Rick Honeycutt (2) | First | -- |
| Friday, May 4 |
| » Defeated Red Sox (12-10), 8-3 | Oakland-Alameda County Stadium (5-3) | 17-5 | Won 5 |
| » W: Dave Stewart (6-0) L: Roger Clemens (4-2) | First | -- |
| Saturday, May 5 |
| » Lost to Red Sox (13-10), 5-1 | Oakland-Alameda County Stadium (5-4) | 17-6 | |
| » W: Mike Boddicker (3-3) L: Bob Welch (3-2) | First | -- |
| Sunday, May 6 |
| » Defeated Red Sox (13-11), 4-2 | Oakland-Alameda County Stadium (6-4) | 18-6 | |
| » W: Curt Young (1-1) L: Eric Hetzel (1-2) S: Dennis Eckersley (9) | First | -- |
| Monday, May 7 |
| » Defeated Yankees (10-14), 5-1 | Oakland-Alameda County Stadium (7-4) | 19-6 | Won 2 |
| » W: Mike Moore (3-1) L: Tim Leary (1-3) S: Todd Burns (1) | First | -- |
| Tuesday, May 8 |
| » Defeated Yankees (10-15), 5-0 | Oakland-Alameda County Stadium (8-4) | 20-6 | Won 3 |
| » W: Scott Sanderson (4-1) L: Greg Cadaret (1-2) S: Gene Nelson (2) | First | -- |
| Wednesday, May 9 |
| » Defeated Yankees (10-16), 2-1 | Oakland-Alameda County Stadium (9-4) | 21-6 | Won 4 |
| » W: Rick Honeycutt (1-0) L: Eric Plunk (2-1) | First | -- |
| Friday, May 11 |
| » Defeated Orioles (12-17), 5-0 | Oakland-Alameda County Stadium (10-4) | 22-6 | Won 5 |
| » W: Bob Welch (4-2) L: Bob Milacki (1-1) | First | -- |
| Saturday, May 12 |
| » Lost to Orioles (13-17), 3-2 | Oakland-Alameda County Stadium (10-5) | 22-7 | |
| » W: Mark Williamson (2-1) L: Gene Nelson (1-2) S: Gregg Olson (7) | First | -- |
| Sunday, May 13 |
| » Lost to Orioles (14-17), 4-1 | Oakland-Alameda County Stadium (10-6) | 22-8 | Lost 2 |
| » W: Jay Tibbs (2-3) L: Mike Moore (3-2) S: Gregg Olson (8) | First | -- |
| Monday, May 14 |
| » Lost to Twins (17-14), 6-2 | Hubert H. Humphrey Metrodome (0-1) | 22-9 | Lost 3 |
| » W: Allan Anderson (2-4) L: Dave Stewart (6-1) | First | -- |
| Tuesday, May 15 |
| » Lost to Indians (17-15), 5-4 | Cleveland Stadium (0-1) | 22-10 | Lost 4 |
| » W: Cecilio Guante (1-2) L: Rick Honeycutt (1-1) S: Doug Jones (13) | First | -- |
| Wednesday, May 16 |
| » Defeated Indians (17-16), 7-6 | Cleveland Stadium (1-1) | 23-10 | |
| » W: Dennis Eckersley (2-0) L: Doug Jones (0-1) | First | -- |
| Friday, May 18 |
| » Lost to Brewers (20-12), 5-0 | County Stadium (0-1) | 23-11 | |
| » W: Bill Wegman (2-0) L: Mike Moore (3-3) | First | -- |
| Saturday, May 19 |
| » Defeated Brewers (20-13), 9-1 | County Stadium (1-1) | 24-11 | |
| » W: Dave Stewart (7-1) L: Tom Filer (2-2) S: Gene Nelson (3) | First | -- |
| Sunday, May 20 |
| » Lost to Brewers (21-13), 5-2 | County Stadium (1-2) | 24-12 | |
| » W: Chris Bosio (4-2) L: Scott Sanderson (4-2) | First | -- |
| Monday, May 21 |
| » Defeated Blue Jays (21-19), 4-1 | Skydome (1-0) | 25-12 | |
| » W: Bob Welch (5-2) L: Todd Stottlemyre (4-5) S: Dennis Eckersley (10) | First | -- |
| Tuesday, May 22 |
| » Defeated Blue Jays (21-20), 5-4 | Skydome (2-0) | 26-12 | Won 2 |
| » W: Curt Young (2-1) L: Frank Wills (3-2) S: Dennis Eckersley (11) | First | -- |
| Wednesday, May 23 |
| » Defeated Brewers (22-15), 12-5 | Oakland-Alameda County Stadium (11-6) | 27-12 | Won 3 |
| » W: Mike Moore (4-3) L: Bill Wegman (2-1) | First | -- |
| Thursday, May 24 |
| » Defeated Brewers (22-16), 13-1 | Oakland-Alameda County Stadium (12-6) | 28-12 | Won 4 |
| » W: Dave Stewart (8-1) L: Tom Filer (2-3) | First | -- |
| Friday, May 25 |
| » Defeated Indians (20-21), 5-2 | Oakland-Alameda County Stadium (13-6) | 29-12 | Won 5 |
| » W: Scott Sanderson (5-2) L: Greg Swindell (2-4) S: Dennis Eckersley (12) | First | -- |
| Saturday, May 26 |
| » Defeated Indians (20-22), 6-3 | Oakland-Alameda County Stadium (14-6) | 30-12 | Won 6 |
| » W: Bob Welch (6-2) L: Sergio Valdez (1-1) S: Dennis Eckersley (13) | First | -- |
| Monday, May 28 |
| » Lost to Blue Jays (25-22), 1-0 | Oakland-Alameda County Stadium (14-7) | 30-13 | |
| » W: Dave Stieb (6-2) L: Mike Moore (4-4) | First | -- |
| Tuesday, May 29 |
| » Lost to Blue Jays (26-22), 2-1 | Oakland-Alameda County Stadium (14-8) | 30-14 | Lost 2 |
| » W: David Wells (2-0) L: Dave Stewart (8-2) S: Tom Henke (6) | First | -- |
| Wednesday, May 30 |
| » Defeated Blue Jays (26-23), 8-5 | Oakland-Alameda County Stadium (15-8) | 31-14 | |
| » W: Todd Burns (1-0) L: Willie Blair (0-1) S: Dennis Eckersley (14) | First | -- |
| Thursday, May 31 |
| » Defeated Royals (20-26), 6-4 | Royals Stadium (1-0) | 32-14 | Won 2 |
| » W: Bob Welch (7-2) L: Tom Gordon (2-3) S: Dennis Eckersley (15) | First | -- |
| Friday, June 1 |
| » Defeated Royals (20-27), 4-3 | Royals Stadium (2-0) | 33-14 | Won 3 |
| » W: Scott Sanderson (6-2) L: Kevin Appier (1-1) S: Dennis Eckersley (16) | First | -- |
| Saturday, June 2 |
| » Lost to Royals (21-27), 10-4 | Royals Stadium (2-1) | 33-15 | |
| » W: Bret Saberhagen (5-3) L: Mike Moore (4-5) | First | -- |
| Sunday, June 3 |
| » Lost to Royals (22-27), 8-2 | Royals Stadium (2-2) | 33-16 | Lost 2 |
| » W: Mark Gubicza (3-5) L: Dave Stewart (8-3) | First | -- |
| Tuesday, June 5 |
| » Defeated Rangers (21-31), 7-4 | Arlington Stadium (1-0) | 34-16 | |
| » W: Bob Welch (8-2) L: Brian Bohanon (0-3) S: Dennis Eckersley (17) | First | -- |
| Wednesday, June 6 |
| » Defeated Rangers (21-32), 5-4 | Arlington Stadium (2-0) | 35-16 | Won 2 |
| » W: Scott Sanderson (7-2) L: Nolan Ryan (4-3) S: Dennis Eckersley (18) | First | -- |
| Thursday, June 7 |
| » Lost to Rangers (22-32), 3-1 | Arlington Stadium (2-1) | 35-17 | |
| » W: Bobby Witt (3-7) L: Mike Moore (4-6) S: Kenny Rogers (2) | First | -- |
| Friday, June 8 |
| » Defeated Royals (22-31), 3-1 | Oakland-Alameda County Stadium (16-8) | 36-17 | |
| » W: Curt Young (3-1) L: Mark Gubicza (3-6) S: Dennis Eckersley (19) | First | -- |
| Saturday, June 9 |
| » Defeated Royals (22-32), 5-0 | Oakland-Alameda County Stadium (17-8) | 37-17 | Won 2 |
| » W: Dave Stewart (9-3) L: Kevin Appier (1-2) | First | -- |
| Sunday, June 10 |
| » Defeated Royals (22-33), 3-2 | Oakland-Alameda County Stadium (18-8) | 38-17 | Won 3 |
| » W: Bob Welch (9-2) L: Steve Farr (4-3) S: Dennis Eckersley (20) | First | -- |
| Monday, June 11 |
| » Lost to Rangers (25-33), 5-0 | Oakland-Alameda County Stadium (18-9) | 38-18 | |
| » W: Nolan Ryan (5-3) L: Scott Sanderson (7-3) | First | -- |
| Tuesday, June 12 |
| » Lost to Rangers (26-33), 6-5 | Oakland-Alameda County Stadium (18-10) | 38-19 | Lost 2 |
| » W: Brad Arnsberg (1-0) L: Dennis Eckersley (2-1) S: Kenny Rogers (3) | First | -- |
| Wednesday, June 13 |
| » Defeated Rangers (26-34), 3-2 | Oakland-Alameda County Stadium (19-10) | 39-19 | |
| » W: Todd Burns (2-0) L: Brad Arnsberg (1-1) | First | -- |
| Thursday, June 14 |
| » Lost to White Sox (37-20), 3-2 | Comiskey Park I (0-1) | 39-20 | |
| » W: Eric King (6-1) L: Dave Stewart (9-4) S: Bobby Thigpen (21) | First | -- |
| Friday, June 15 |
| » Defeated White Sox (37-21), 5-4 | Comiskey Park I (1-1) | 40-20 | |
| » W: Bob Welch (10-2) L: Barry Jones (7-1) S: Dennis Eckersley (21) | First | -- |
| Saturday, June 16 |
| » Defeated White Sox (37-22), 12-3 | Comiskey Park I (2-1) | 41-20 | Won 2 |
| » W: Scott Sanderson (8-3) L: Melido Perez (6-5) | First | -- |
| » Major-league debuts: Steve Howard (Athletics) |
| Sunday, June 17 |
| » Defeated White Sox (37-23), 5-2 | Comiskey Park I (3-1) | 42-20 | Won 3 |
| » W: Mike Moore (5-6) L: Donn Pall (0-2) S: Dennis Eckersley (22) | First | -- |
| Monday, June 18 |
| » Lost to Tigers (32-34), 7-2 | Tiger Stadium (0-1) | 42-21 | |
| » W: Jeff Robinson (5-5) L: Curt Young (3-2) S: Edwin Nunez (2) | First | -- |
| Tuesday, June 19 |
| » Lost to Tigers (33-34), 7-6 | Tiger Stadium (0-2) | 42-22 | Lost 2 |
| » W: Paul Gibson (2-1) L: Dave Stewart (9-5) S: Mike Henneman (16) | First | -- |
| Wednesday, June 20 |
| » Defeated Tigers (33-35), 12-7 | Tiger Stadium (1-2) | 43-22 | |
| » W: Bob Welch (11-2) L: Dan Petry (5-4) | First | -- |
| Friday, June 22 |
| » Lost to White Sox (39-25), 5-0 | Oakland-Alameda County Stadium (19-11) | 43-23 | |
| » W: Eric King (7-1) L: Scott Sanderson (8-4) | First | -- |
| Saturday, June 23 |
| » Lost to White Sox (40-25), 5-3 | Oakland-Alameda County Stadium (19-12) | 43-24 | Lost 2 |
| » W: Jack McDowell (4-4) L: Mike Moore (5-7) S: Bobby Thigpen (23) | First | -- |
| Sunday, June 24 |
| » Lost to White Sox (41-25), 3-2 | Oakland-Alameda County Stadium (19-13) | 43-25 | Lost 3 |
| » W: Bobby Thigpen (3-2) L: Dave Stewart (9-6) S: Barry Jones (1) | First | -- |
| Monday, June 25 |
| » Defeated Tigers (34-39), 4-3 | Oakland-Alameda County Stadium (20-13) | 44-25 | |
| » W: Bob Welch (12-2) L: Dan Petry (5-5) S: Dennis Eckersley (23) | First | -- |
| Tuesday, June 26 |
| » Defeated Tigers (34-40), 3-2 | Oakland-Alameda County Stadium (21-13) | 45-25 | Won 2 |
| » W: Scott Sanderson (9-4) L: Jack Morris (6-9) S: Dennis Eckersley (24) | First | -- |
| Wednesday, June 27 |
| » Lost to Tigers (35-40), 5-4 | Oakland-Alameda County Stadium (21-14) | 45-26 | |
| » W: Mike Henneman (4-4) L: Todd Burns (2-1) | Second | 1 out |
| Friday, June 29 |
| » Defeated Blue Jays (41-35), 5-0 | Skydome (3-0) | 46-26 | |
| » W: Dave Stewart (10-6) L: John Cerutti (4-6) | Second | 1 out |
| Saturday, June 30 |
| » Defeated Blue Jays (41-36), 9-4 | Skydome (4-0) | 47-26 | Won 2 |
| » W: Bob Welch (13-2) L: Dave Stieb (10-3) | First | -- |
| Sunday, July 1 |
| » Lost to Blue Jays (42-36), 4-3 | Skydome (4-1) | 47-27 | |
| » W: Willie Blair (1-5) L: Todd Burns (2-2) S: Tom Henke (13) | Second | 1 out |
| Monday, July 2 |
| » Defeated Blue Jays (42-37), 3-2 | Skydome (5-1) | 48-27 | |
| » W: Mike Moore (6-7) L: Jimmy Key (4-4) S: Dennis Eckersley (25) | Second | 1 out |
| Tuesday, July 3 |
| » Defeated Brewers (33-42), 5-0 | County Stadium (2-2) | 49-27 | Won 2 |
| » W: Curt Young (4-2) L: Bill Krueger (4-4) | First | -- |
| Wednesday, July 4 |
| » Lost to Brewers (34-42), 7-1 | County Stadium (2-3) | 49-28 | |
| » W: Ron Robinson (4-3) L: Dave Stewart (10-7) | First | -- |
| » Major-league debuts: Reggie Harris (Athletics) |
| Thursday, July 5 |
| » Lost to Brewers (35-42), 4-3 | County Stadium (2-4) | 49-29 | Lost 2 |
| » W: Teddy Higuera (6-2) L: Bob Welch (13-3) S: Dan Plesac (14) | First | -- |
| Friday, July 6 |
| » Lost to Indians (39-40), 6-1 | Cleveland Stadium (1-2) | 49-30 | Lost 3 |
| » W: Greg Swindell (4-5) L: Scott Sanderson (9-5) | Second | 2 out |
| » Defeated Indians (39-41), 12-1 | Cleveland Stadium (2-2) | 50-30 | |
| » W: Mike Moore (7-7) L: Sergio Valdez (2-5) | Second | 2 out |
| Saturday, July 7 |
| » Lost to Indians (40-41), 1-0 | Cleveland Stadium (2-3) | 50-31 | |
| » W: Bud Black (7-4) L: Curt Young (4-3) | Second | 2 out |
| Sunday, July 8 |
| » Defeated Indians (40-42), 8-3 | Cleveland Stadium (3-3) | 51-31 | |
| » W: Dave Stewart (11-7) L: Al Nipper (2-2) | First | -- |
| Wednesday, July 11 |
| » Defeated Twins (40-44), 11-7 | Hubert H. Humphrey Metrodome (1-1) | 52-31 | Won 2 |
| » W: Scott Sanderson (10-5) L: Allan Anderson (2-12) S: Dennis Eckersley (26) | First | -- |
| Thursday, July 12 |
| » Defeated Brewers (37-45), 5-3 | Oakland-Alameda County Stadium (22-14) | 53-31 | Won 3 |
| » W: Mike Moore (8-7) L: Teddy Higuera (6-3) S: Dennis Eckersley (27) | First | -- |
| Friday, July 13 |
| » Lost to Brewers (38-45), 2-0 | Oakland-Alameda County Stadium (22-15) | 53-32 | |
| » W: Mark Knudson (6-4) L: Dave Stewart (11-8) | First | -- |
| Saturday, July 14 |
| » Defeated Brewers (38-46), 3-1 | Oakland-Alameda County Stadium (23-15) | 54-32 | |
| » W: Bob Welch (14-3) L: Bill Krueger (4-5) S: Dennis Eckersley (28) | First | -- |
| Sunday, July 15 |
| » Defeated Brewers (38-47), 4-1 | Oakland-Alameda County Stadium (24-15) | 55-32 | Won 2 |
| » W: Curt Young (5-3) L: Chris Bosio (4-7) S: Rick Honeycutt (3) | First | -- |
| Monday, July 16 |
| » Defeated Indians (43-44), 3-0 | Oakland-Alameda County Stadium (25-15) | 56-32 | Won 3 |
| » W: Scott Sanderson (11-5) L: Al Nipper (2-3) S: Gene Nelson (4) | First | -- |
| Tuesday, July 17 |
| » Lost to Indians (44-44), 4-2 | Oakland-Alameda County Stadium (25-16) | 56-33 | |
| » W: Greg Swindell (5-5) L: Mike Moore (8-8) S: Doug Jones (26) | First | -- |
| Wednesday, July 18 |
| » Defeated Indians (44-45), 4-1 | Oakland-Alameda County Stadium (26-16) | 57-33 | |
| » W: Bob Welch (15-3) L: Tom Candiotti (10-5) S: Dennis Eckersley (29) | First | -- |
| » Defeated Indians (44-46), 5-2 | Oakland-Alameda County Stadium (27-16) | 58-33 | Won 2 |
| » W: Dave Stewart (12-8) L: Rod Nichols (0-2) S: Dennis Eckersley (30) | First | -- |
| » Major-league debuts: Ozzie Canseco (Athletics) |
| Friday, July 20 |
| » Lost to Blue Jays (50-43), 8-6 | Oakland-Alameda County Stadium (27-17) | 58-34 | |
| » W: John Cerutti (6-6) L: Curt Young (5-4) S: Tom Henke (18) | First | -- |
| Saturday, July 21 |
| » Lost to Blue Jays (51-43), 2-1 | Oakland-Alameda County Stadium (27-18) | 58-35 | Lost 2 |
| » W: Dave Stieb (12-3) L: Scott Sanderson (11-6) S: Tom Henke (19) | First | -- |
| Sunday, July 22 |
| » Defeated Blue Jays (51-44), 3-0 | Oakland-Alameda County Stadium (28-18) | 59-35 | |
| » W: Mike Moore (9-8) L: Jimmy Key (6-5) S: Rick Honeycutt (4) | First | -- |
| Monday, July 23 |
| » Defeated Angels (47-49), 7-6 | Oakland-Alameda County Stadium (29-18) | 60-35 | Won 2 |
| » W: Gene Nelson (2-2) L: Cliff Young (0-1) | First | -- |
| Tuesday, July 24 |
| » Defeated Angels (47-50), 5-3 | Oakland-Alameda County Stadium (30-18) | 61-35 | Won 3 |
| » W: Bob Welch (16-3) L: Jim Abbott (6-9) S: Dennis Eckersley (31) | First | -- |
| Wednesday, July 25 |
| » Defeated Angels (47-51), 13-3 | Oakland-Alameda County Stadium (31-18) | 62-35 | Won 4 |
| » W: Curt Young (6-4) L: Bert Blyleven (8-6) S: Todd Burns (2) | First | -- |
| Thursday, July 26 |
| » Lost to Angels (48-51), 4-2 | Oakland-Alameda County Stadium (31-19) | 62-36 | |
| » W: Bryan Harvey (3-2) L: Dennis Eckersley (2-2) | First | -- |
| Friday, July 27 |
| » Lost to Twins (47-52), 9-4 | Hubert H. Humphrey Metrodome (1-2) | 62-37 | Lost 2 |
| » W: Roy Smith (5-8) L: Mike Moore (9-9) | First | -- |
| Saturday, July 28 |
| » Defeated Twins (47-53), 4-1 | Hubert H. Humphrey Metrodome (2-2) | 63-37 | |
| » W: Dave Stewart (13-8) L: Mark Guthrie (3-3) | First | -- |
| » Lost to Twins (48-53), 9-4 | Hubert H. Humphrey Metrodome (2-3) | 63-38 | |
| » W: Scott Erickson (2-2) L: Bob Welch (16-4) | First | -- |
| Sunday, July 29 |
| » Lost to Twins (49-53), 6-5 | Hubert H. Humphrey Metrodome (2-4) | 63-39 | Lost 2 |
| » W: Rick Aguilera (3-3) L: Rick Honeycutt (1-2) | First | -- |
| Monday, July 30 |
| » Defeated Mariners (53-50), 6-2 | Oakland-Alameda County Stadium (32-19) | 64-39 | |
| » W: Rick Honeycutt (2-2) L: Randy Johnson (9-7) S: Dennis Eckersley (32) | First | -- |
| Tuesday, July 31 |
| » Lost to Mariners (54-50), 7-2 | Oakland-Alameda County Stadium (32-20) | 64-40 | |
| » W: Bill Swift (5-2) L: Mike Moore (9-10) | First | -- |
| » Major-league debuts: Joe Bitker (Athletics) |
| Wednesday, August 1 |
| » Defeated Mariners (54-51), 1-0 | Oakland-Alameda County Stadium (33-20) | 65-40 | |
| » W: Dave Stewart (14-8) L: Mike Schooler (1-2) | First | -- |
| Thursday, August 2 |
| » Defeated Angels (51-55), 7-5 | Anaheim Stadium (3-0) | 66-40 | Won 2 |
| » W: Bob Welch (17-4) L: Kirk McCaskill (7-8) S: Dennis Eckersley (33) | First | -- |
| Friday, August 3 |
| » Defeated Angels (51-56), 8-6 | Anaheim Stadium (4-0) | 67-40 | Won 3 |
| » W: Reggie Harris (1-0) L: Willie Fraser (2-3) S: Dennis Eckersley (34) | First | -- |
| Saturday, August 4 |
| » Lost to Angels (52-56), 6-5 | Anaheim Stadium (4-1) | 67-41 | |
| » W: Mark Eichhorn (2-4) L: Todd Burns (2-3) | First | -- |
| » Major-league debuts: Joe Grahe (Angels) |
| Sunday, August 5 |
| » Defeated Angels (52-57), 4-1 | Anaheim Stadium (5-1) | 68-41 | |
| » W: Dave Stewart (15-8) L: Chuck Finley (14-5) S: Dennis Eckersley (35) | First | -- |
| Tuesday, August 7 |
| » Defeated Orioles (53-55), 3-2 | Oakland-Alameda County Stadium (34-20) | 69-41 | Won 2 |
| » W: Bob Welch (18-4) L: John Mitchell (4-4) S: Dennis Eckersley (36) | First | -- |
| Wednesday, August 8 |
| » Lost to Orioles (54-55), 4-1 | Oakland-Alameda County Stadium (34-21) | 69-42 | |
| » W: Ben McDonald (4-0) L: Scott Sanderson (11-7) S: Gregg Olson (26) | First | -- |
| Thursday, August 9 |
| » Defeated Orioles (54-56), 5-2 | Oakland-Alameda County Stadium (35-21) | 70-42 | |
| » W: Mike Moore (10-10) L: Dave Johnson (11-7) S: Dennis Eckersley (37) | First | -- |
| Friday, August 10 |
| » Defeated Yankees (46-65), 3-0 | Oakland-Alameda County Stadium (36-21) | 71-42 | Won 2 |
| » W: Dave Stewart (16-8) L: Dave LaPoint (6-8) S: Rick Honeycutt (5) | First | -- |
| Saturday, August 11 |
| » Defeated Yankees (46-66), 10-1 | Oakland-Alameda County Stadium (37-21) | 72-42 | Won 3 |
| » W: Curt Young (7-4) L: Andy Hawkins (3-10) S: Gene Nelson (5) | First | -- |
| Sunday, August 12 |
| » Defeated Yankees (46-67), 6-1 | Oakland-Alameda County Stadium (38-21) | 73-42 | Won 4 |
| » W: Bob Welch (19-4) L: Mike Witt (1-5) S: Rick Honeycutt (6) | First | -- |
| Monday, August 13 |
| » Defeated Red Sox (62-52), 4-0 | Oakland-Alameda County Stadium (39-21) | 74-42 | Won 5 |
| » W: Scott Sanderson (12-7) L: Greg Harris (9-5) | First | -- |
| Tuesday, August 14 |
| » Lost to Red Sox (63-52), 2-0 | Oakland-Alameda County Stadium (39-22) | 74-43 | |
| » W: Roger Clemens (17-5) L: Mike Moore (10-11) | First | -- |
| Wednesday, August 15 |
| » Defeated Red Sox (63-53), 6-2 | Oakland-Alameda County Stadium (40-22) | 75-43 | |
| » W: Dave Stewart (17-8) L: Daryl Irvine (1-1) | First | -- |
| Friday, August 17 |
| » Defeated Orioles (56-61), 8-3 | Memorial Stadium (4-0) | 76-43 | Won 2 |
| » W: Bob Welch (20-4) L: John Mitchell (5-5) | First | -- |
| Saturday, August 18 |
| » Defeated Orioles (56-62), 3-1 | Memorial Stadium (5-0) | 77-43 | Won 3 |
| » W: Gene Nelson (3-2) L: Ben McDonald (5-1) S: Dennis Eckersley (38) | First | -- |
| Sunday, August 19 |
| » Lost to Orioles (57-62), 3-2 | Memorial Stadium (5-1) | 77-44 | |
| » W: Anthony Telford (1-0) L: Scott Sanderson (12-8) S: Gregg Olson (28) | First | -- |
| » Major-league debuts: Anthony Telford (Orioles) |
| Monday, August 20 |
| » Lost to White Sox (70-49), 11-1 | Comiskey Park I (3-2) | 77-45 | Lost 2 |
| » W: Jack McDowell (10-6) L: Dave Stewart (17-9) | First | -- |
| Tuesday, August 21 |
| » Lost to White Sox (71-49), 4-1 | Comiskey Park I (3-3) | 77-46 | Lost 3 |
| » W: Greg Hibbard (10-7) L: Mike Moore (10-12) S: Bobby Thigpen (41) | First | -- |
| » Major-league debuts: Darren Lewis (Athletics) |
| Wednesday, August 22 |
| » Defeated White Sox (71-50), 7-1 | Comiskey Park I (4-3) | 78-46 | |
| » W: Bob Welch (21-4) L: Melido Perez (11-11) | First | -- |
| Friday, August 24 |
| » Defeated Tigers (58-68), 6-4 | Tiger Stadium (2-2) | 79-46 | Won 2 |
| » W: Scott Sanderson (13-8) L: Walt Terrell (4-9) S: Dennis Eckersley (39) | First | -- |
| Saturday, August 25 |
| » Lost to Tigers (59-68), 14-4 | Tiger Stadium (2-3) | 79-47 | |
| » W: Frank Tanana (6-7) L: Dave Stewart (17-10) | First | -- |
| Sunday, August 26 |
| » Lost to Tigers (60-68), 7-3 | Tiger Stadium (2-4) | 79-48 | Lost 2 |
| » W: Jeff Robinson (10-9) L: Bob Welch (21-5) | First | -- |
| Tuesday, August 28 |
| » Defeated Royals (64-64), 3-2 | Oakland-Alameda County Stadium (41-22) | 80-48 | |
| » W: Mike Moore (11-12) L: Jeff Montgomery (5-3) | First | -- |
| Wednesday, August 29 |
| » Lost to Royals (65-64), 6-0 | Oakland-Alameda County Stadium (41-23) | 80-49 | |
| » W: Kevin Appier (11-4) L: Scott Sanderson (13-9) | First | -- |
| Thursday, August 30 |
| » Defeated Royals (65-65), 6-5 | Oakland-Alameda County Stadium (42-23) | 81-49 | |
| » W: Dennis Eckersley (3-2) L: Steve Crawford (5-3) | First | -- |
| Friday, August 31 |
| » Defeated Rangers (66-65), 4-2 | Oakland-Alameda County Stadium (43-23) | 82-49 | Won 2 |
| » W: Bob Welch (22-5) L: Jamie Moyer (1-6) S: Dennis Eckersley (40) | First | -- |
| Saturday, September 1 |
| » Lost to Rangers (67-65), 3-2 | Oakland-Alameda County Stadium (43-24) | 82-50 | |
| » W: Bobby Witt (14-8) L: Curt Young (7-5) S: Kenny Rogers (13) | First | -- |
| Sunday, September 2 |
| » Defeated Rangers (67-66), 4-2 | Oakland-Alameda County Stadium (44-24) | 83-50 | |
| » W: Mike Moore (12-12) L: Charlie Hough (10-10) S: Dennis Eckersley (41) | First | -- |
| Monday, September 3 |
| » Defeated Red Sox (76-58), 9-5 | Fenway Park (2-2) | 84-50 | Won 2 |
| » W: Scott Sanderson (14-9) L: Dana Kiecker (6-7) | First | -- |
| Tuesday, September 4 |
| » Defeated Red Sox (76-59), 6-2 | Fenway Park (3-2) | 85-50 | Won 3 |
| » W: Dave Stewart (18-10) L: Roger Clemens (20-6) | First | -- |
| Wednesday, September 5 |
| » Defeated Red Sox (76-60), 10-0 | Fenway Park (4-2) | 86-50 | Won 4 |
| » W: Bob Welch (23-5) L: Greg Harris (12-6) | First | -- |
| » Major-league debuts: Scott Cooper (Red Sox) |
| Friday, September 7 |
| » Defeated Yankees (57-80), 7-1 | Yankee Stadium (4-0) | 87-50 | Won 5 |
| » W: Curt Young (8-5) L: Andy Hawkins (5-12) S: Todd Burns (3) | First | -- |
| Saturday, September 8 |
| » Defeated Yankees (57-81), 5-2 | Yankee Stadium (5-0) | 88-50 | Won 6 |
| » W: Scott Sanderson (15-9) L: Mike Witt (3-8) S: Dennis Eckersley (42) | First | -- |
| Sunday, September 9 |
| » Defeated Yankees (57-82), 7-3 | Yankee Stadium (6-0) | 89-50 | Won 7 |
| » W: Dave Stewart (19-10) L: Tim Leary (8-18) | First | -- |
| Former Athletic Doc Cramer dies in Manahawkin, NJ at the age of 86. |
| Monday, September 10 |
| » Lost to Mariners (70-71), 5-2 | Kingdome (3-1) | 89-51 | |
| » W: Erik Hanson (14-9) L: Bob Welch (23-6) S: Keith Comstock (2) | First | -- |
| Tuesday, September 11 |
| » Defeated Mariners (70-72), 10-2 | Kingdome (4-1) | 90-51 | |
| » W: Curt Young (9-5) L: Randy Johnson (13-9) | First | -- |
| » Major-league debuts: Jose Melendez (Mariners) |
| Wednesday, September 12 |
| » Defeated Mariners (70-73), 9-3 | Kingdome (5-1) | 91-51 | Won 2 |
| » W: Scott Sanderson (16-9) L: Mike Gardiner (0-1) | First | -- |
| Thursday, September 13 |
| » Lost to Twins (66-79), 3-1 | Oakland-Alameda County Stadium (44-25) | 91-52 | |
| » W: Juan Berenguer (8-3) L: Gene Nelson (3-3) | First | -- |
| Friday, September 14 |
| » Defeated Twins (66-80), 9-1 | Oakland-Alameda County Stadium (45-25) | 92-52 | |
| » W: Dave Stewart (20-10) L: Mark Guthrie (6-8) | First | -- |
| Saturday, September 15 |
| » Defeated Twins (66-81), 4-1 | Oakland-Alameda County Stadium (46-25) | 93-52 | Won 2 |
| » W: Bob Welch (24-6) L: Paul Abbott (0-4) S: Dennis Eckersley (43) | First | -- |
| » Major-league debuts: Steve Chitren (Athletics) |
| Sunday, September 16 |
| » Defeated Twins (66-82), 5-4 | Oakland-Alameda County Stadium (47-25) | 94-52 | Won 3 |
| » W: Dennis Eckersley (4-2) L: Juan Berenguer (8-4) | First | -- |
| Monday, September 17 |
| » Lost to White Sox (85-62), 7-0 | Oakland-Alameda County Stadium (47-26) | 94-53 | |
| » W: Melido Perez (13-14) L: Scott Sanderson (16-10) | First | -- |
| Tuesday, September 18 |
| » Lost to White Sox (86-62), 8-2 | Oakland-Alameda County Stadium (47-27) | 94-54 | Lost 2 |
| » W: Alex Fernandez (4-3) L: Mike Moore (12-13) | First | -- |
| Wednesday, September 19 |
| » Defeated White Sox (86-63), 7-3 | Oakland-Alameda County Stadium (48-27) | 95-54 | |
| » W: Dave Stewart (21-10) L: Jack McDowell (13-8) | First | -- |
| Friday, September 21 |
| » Defeated Tigers (73-78), 6-5 | Oakland-Alameda County Stadium (49-27) | 96-54 | Won 2 |
| » W: Bob Welch (25-6) L: Clay Parker (3-3) S: Dennis Eckersley (44) | First | -- |
| Saturday, September 22 |
| » Defeated Tigers (73-79), 5-1 | Oakland-Alameda County Stadium (50-27) | 97-54 | Won 3 |
| » W: Scott Sanderson (17-10) L: Steve Searcy (2-6) S: Rick Honeycutt (7) | First | -- |
| Sunday, September 23 |
| » Lost to Tigers (74-79), 6-0 | Oakland-Alameda County Stadium (50-28) | 97-55 | |
| » W: Jack Morris (13-18) L: Mike Moore (12-14) | First | -- |
| Monday, September 24 |
| » Lost to Royals (72-81), 10-3 | Royals Stadium (2-3) | 97-56 | Lost 2 |
| » W: Tom Gordon (12-11) L: Curt Young (9-6) | First | -- |
| Tuesday, September 25 |
| » Defeated Royals (72-82), 5-0 | Royals Stadium (3-3) | 98-56 | |
| » W: Dave Stewart (22-10) L: Kevin Appier (11-8) | First | -- |
| Wednesday, September 26 |
| » Defeated Royals (72-83), 3-2 | Royals Stadium (4-3) | 99-56 | Won 2 |
| » W: Bob Welch (26-6) L: Bret Saberhagen (5-9) S: Dennis Eckersley (45) | First | -- |
| Thursday, September 27 |
| » Lost to Rangers (82-74), 8-6 | Arlington Stadium (2-2) | 99-57 | |
| » W: Scott Chiamparino (1-2) L: Scott Sanderson (17-11) S: Jeff Russell (9) | First | -- |
| Friday, September 28 |
| » Defeated Rangers (82-75), 4-1 | Arlington Stadium (3-2) | 100-57 | |
| » W: Mike Moore (13-14) L: Charlie Hough (12-12) S: Dennis Eckersley (46) | First | -- |
| Saturday, September 29 |
| » Defeated Rangers (82-76), 7-3 | Arlington Stadium (4-2) | 101-57 | Won 2 |
| » W: Todd Burns (3-3) L: Craig McMurtry (0-3) S: Dennis Eckersley (47) | First | -- |
| Sunday, September 30 |
| » Defeated Rangers (82-77), 4-3 | Arlington Stadium (5-2) | 102-57 | Won 3 |
| » W: Steve Chitren (1-0) L: Nolan Ryan (13-9) S: Joe Klink (1) | First | -- |
| Monday, October 1 |
| » Lost to Angels (79-81), 2-0 | Oakland-Alameda County Stadium (50-29) | 102-58 | |
| » W: Joe Grahe (3-4) L: Dave Stewart (22-11) S: Bryan Harvey (25) | First | -- |
| Tuesday, October 2 |
| » Defeated Angels (79-82), 6-4 | Oakland-Alameda County Stadium (51-29) | 103-58 | |
| » W: Bob Welch (27-6) L: Willie Fraser (5-4) S: Dennis Eckersley (48) | First | -- |
| Wednesday, October 3 |
| » Lost to Angels (80-82), 11-6 | Oakland-Alameda County Stadium (51-30) | 103-59 | |
| » W: Cliff Young (1-1) L: Mike Moore (13-15) | First | -- |
| Friday, December 7 |
| Former Athletic Lew Flick dies in Weber City, VA at the age of 76. |
Game information provided by Retrosheet (www.retrosheet.org) |