| Monday, April 8 |
| » Major-league debuts: Lou Thornton (Blue Jays) |
| Tuesday, April 9 |
| » Lost to Mariners (1-0), 6-3 | Kingdome (0-1) | 0-1 | |
| » W: Mike Moore (1-0) L: Chris Codiroli (0-1) S: Edwin Nunez (1) | Second | 1 out |
| Wednesday, April 10 |
| » Lost to Mariners (2-0), 5-4 | Kingdome (0-2) | 0-2 | Lost 2 |
| » W: Mark Langston (1-0) L: Bill Krueger (0-1) S: Edwin Nunez (2) | Fourth | 2 out |
| Thursday, April 11 |
| » Lost to Mariners (3-0), 14-6 | Kingdome (0-3) | 0-3 | Lost 3 |
| » W: Mike Morgan (1-0) L: Curt Young (0-1) | Sixth | 3 out |
| » Major-league debuts: Mike Gallego and Jeff Kaiser (Athletics) |
| Friday, April 12 |
| » Defeated Angels (1-3), 15-6 | Oakland-Alameda County Stadium (1-0) | 1-3 | |
| » W: Don Sutton (1-0) L: Tommy John (0-1) | Fifth | 3 out |
| » Major-league debuts: Bob Kipper (Angels) |
| Saturday, April 13 |
| » Lost to Angels (2-3), 6-1 | Oakland-Alameda County Stadium (1-1) | 1-4 | |
| » W: Ron Romanick (1-0) L: Mike Warren (0-1) | Fifth | 4 out |
| Sunday, April 14 |
| » Defeated Angels (2-4), 8-1 | Oakland-Alameda County Stadium (2-1) | 2-4 | |
| » W: Chris Codiroli (1-1) L: Mike Witt (0-2) S: Jay Howell (1) | Third | 4 out |
| Monday, April 15 |
| » Defeated Mariners (6-1), 7-4 | Oakland-Alameda County Stadium (3-1) | 3-4 | Won 2 |
| » W: Bill Krueger (1-1) L: Mark Langston (1-1) S: Jay Howell (2) | Third | 3 out |
| Tuesday, April 16 |
| » Defeated Mariners (6-2), 9-7 | Oakland-Alameda County Stadium (4-1) | 4-4 | Won 3 |
| » W: Mike Warren (1-1) L: Mike Morgan (1-1) S: Jay Howell (3) | Third | 2 out |
| Wednesday, April 17 |
| » Defeated Mariners (6-3), 8-4 | Oakland-Alameda County Stadium (5-1) | 5-4 | Won 4 |
| » W: Don Sutton (2-0) L: Matt Young (1-1) | Second | 1 out |
| Friday, April 19 |
| » Defeated Twins (2-8), 4-2 | Oakland-Alameda County Stadium (6-1) | 6-4 | Won 5 |
| » W: Chris Codiroli (2-1) L: Frank Viola (1-2) S: Jay Howell (4) | First | -- |
| Saturday, April 20 |
| » Defeated Twins (2-9), 6-2 | Oakland-Alameda County Stadium (7-1) | 7-4 | Won 6 |
| » W: Bill Krueger (2-1) L: Mike Smithson (1-2) | First | -- |
| Sunday, April 21 |
| » Lost to Twins (3-9), 2-0 | Oakland-Alameda County Stadium (7-2) | 7-5 | |
| » W: John Butcher (1-1) L: Curt Young (0-2) | First | -- |
| Monday, April 22 |
| » Lost to Angels (8-5), 6-1 | Anaheim Stadium (0-1) | 7-6 | Lost 2 |
| » W: Jim Slaton (2-0) L: Don Sutton (2-1) | Second | 1 out |
| Tuesday, April 23 |
| » Defeated Angels (8-6), 14-9 | Anaheim Stadium (1-1) | 8-6 | |
| » W: Keith Atherton (1-0) L: Bob Kipper (0-1) S: Jay Howell (5) | First | -- |
| Wednesday, April 24 |
| » Defeated Angels (8-7), 6-4 | Anaheim Stadium (2-1) | 9-6 | Won 2 |
| » W: Steve McCatty (1-0) L: Ron Romanick (2-1) S: Jay Howell (6) | First | -- |
| Thursday, April 25 |
| » Lost to Twins (7-9), 5-4 | Hubert H. Humphrey Metrodome (0-1) | 9-7 | |
| » W: John Butcher (2-1) L: Keith Atherton (1-1) | First | -- |
| Friday, April 26 |
| » Lost to Twins (8-9), 8-7 | Hubert H. Humphrey Metrodome (0-2) | 9-8 | Lost 2 |
| » W: Ron Davis (1-1) L: Keith Atherton (1-2) | Second | 1 out |
| Saturday, April 27 |
| » Lost to Twins (9-9), 8-6 | Hubert H. Humphrey Metrodome (0-3) | 9-9 | Lost 3 |
| » W: Frank Viola (3-2) L: Don Sutton (2-2) S: Ron Davis (3) | Fourth | 2 out |
| Sunday, April 28 |
| » Lost to Twins (10-9), 10-1 | Hubert H. Humphrey Metrodome (0-4) | 9-10 | Lost 4 |
| » W: Mike Smithson (3-2) L: Mike Warren (1-2) | Fifth | 3 out |
| Monday, April 29 |
| » Lost to Blue Jays (12-7), 2-1 | Oakland-Alameda County Stadium (7-3) | 9-11 | Lost 5 |
| » W: Luis Leal (2-1) L: Bill Krueger (2-2) S: Bill Caudill (5) | Fifth | 4 out |
| Tuesday, April 30 |
| » Lost to Blue Jays (13-7), 4-3 | Oakland-Alameda County Stadium (7-4) | 9-12 | Lost 6 |
| » W: Dennis Lamp (2-0) L: Jay Howell (0-1) S: Jim Acker (3) | Fifth | 5 out |
| Wednesday, May 1 |
| » Lost to Brewers (9-11), 7-4 | Oakland-Alameda County Stadium (7-5) | 9-13 | Lost 7 |
| » W: Danny Darwin (3-1) L: Steve McCatty (1-1) | Sixth | 5 out |
| Thursday, May 2 |
| » Defeated Brewers (9-12), 5-4 | Oakland-Alameda County Stadium (8-5) | 10-13 | |
| » W: Keith Atherton (2-2) L: Ray Searage (0-3) | Fifth | 5 out |
| Friday, May 3 |
| » Lost to Red Sox (11-12), 10-0 | Oakland-Alameda County Stadium (8-6) | 10-14 | |
| » W: Oil Can Boyd (3-1) L: Mike Warren (1-3) | Fifth | 5 out |
| Saturday, May 4 |
| » Lost to Red Sox (12-12), 5-4 | Oakland-Alameda County Stadium (8-7) | 10-15 | Lost 2 |
| » W: Steve Crawford (3-2) L: Bill Krueger (2-3) S: Bob Ojeda (1) | Sixth | 6 out |
| Sunday, May 5 |
| » Defeated Red Sox (12-13), 6-3 | Oakland-Alameda County Stadium (9-7) | 11-15 | |
| » W: Chris Codiroli (3-1) L: Bruce Hurst (1-2) S: Jay Howell (7) | Sixth | 6 out |
| Tuesday, May 7 |
| » Lost to Blue Jays (16-10), 10-1 | Exhibition Stadium (0-1) | 11-16 | |
| » W: Dave Stieb (2-3) L: Don Sutton (2-3) | Sixth | 6 out |
| Wednesday, May 8 |
| » Defeated Blue Jays (16-11), 6-4 | Exhibition Stadium (1-1) | 12-16 | |
| » W: Steve McCatty (2-1) L: Doyle Alexander (4-1) S: Jay Howell (8) | Sixth | 5 out |
| Friday, May 10 |
| » Lost to Red Sox (15-13), 5-4 | Fenway Park (0-1) | 12-17 | |
| » W: Mark Clear (1-0) L: Jay Howell (0-2) | Sixth | 6 out |
| Saturday, May 11 |
| » Defeated Red Sox (15-14), 12-1 | Fenway Park (1-1) | 13-17 | |
| » W: Bill Krueger (3-3) L: Bruce Hurst (1-3) | Fifth | 6 out |
| Sunday, May 12 |
| » Defeated Red Sox (15-15), 5-3 | Fenway Park (2-1) | 14-17 | Won 2 |
| » W: Don Sutton (3-3) L: Roger Clemens (3-4) S: Jay Howell (9) | Fifth | 5 out |
| Tuesday, May 14 |
| » Defeated Brewers (12-18), 6-3 | County Stadium (1-0) | 15-17 | Won 3 |
| » W: Chris Codiroli (4-1) L: Rollie Fingers (0-2) | Fifth | 4 out |
| » Major-league debuts: Ernest Riles (Brewers) |
| Wednesday, May 15 |
| » Defeated Brewers (12-19), 19-3 | County Stadium (2-0) | 16-17 | Won 4 |
| » W: Bill Krueger (4-3) L: Teddy Higuera (1-2) | Fifth | 4 out |
| Friday, May 17 |
| » Lost to Tigers (19-13), 10-2 | Oakland-Alameda County Stadium (9-8) | 16-18 | |
| » W: Jack Morris (5-4) L: Don Sutton (3-4) S: Aurelio Lopez (3) | Fifth | 4 out |
| Saturday, May 18 |
| » Lost to Tigers (20-13), 9-6 | Oakland-Alameda County Stadium (9-9) | 16-19 | Lost 2 |
| » W: Dan Petry (7-2) L: Steve McCatty (2-2) | Fifth | 4 out |
| Sunday, May 19 |
| » Defeated Tigers (20-14), 9-7 | Oakland-Alameda County Stadium (10-9) | 17-19 | |
| » W: Chris Codiroli (5-1) L: Milt Wilcox (1-2) | Fifth | 4 out |
| Tuesday, May 21 |
| » Defeated Orioles (21-15), 3-2 | Oakland-Alameda County Stadium (11-9) | 18-19 | Won 2 |
| » W: Jay Howell (1-2) L: Mike Boddicker (6-2) | Fifth | 4½ out |
| Wednesday, May 22 |
| » Lost to Orioles (22-15), 3-0 | Oakland-Alameda County Stadium (11-10) | 18-20 | |
| » W: Scott McGregor (2-4) L: Don Sutton (3-5) | Fifth | 4½ out |
| Thursday, May 23 |
| » Defeated Orioles (22-16), 4-2 | Oakland-Alameda County Stadium (12-10) | 19-20 | |
| » W: Tim Birtsas (1-0) L: Ken Dixon (4-2) S: Jay Howell (10) | Fifth | 4 out |
| Friday, May 24 |
| » Lost to Yankees (20-18), 10-3 | Oakland-Alameda County Stadium (12-11) | 19-21 | |
| » W: Joe Cowley (3-2) L: Chris Codiroli (5-2) | Fifth | 4 out |
| Saturday, May 25 |
| » Defeated Yankees (20-19), 8-7 | Oakland-Alameda County Stadium (13-11) | 20-21 | |
| » W: Jay Howell (2-2) L: Dave Righetti (3-3) | Fifth | 4 out |
| Sunday, May 26 |
| » Lost to Yankees (21-19), 13-1 | Oakland-Alameda County Stadium (13-12) | 20-22 | |
| » W: Ron Guidry (5-3) L: Bill Krueger (4-4) | Fifth | 5 out |
| Monday, May 27 |
| » Defeated Yankees (21-20), 2-1 | Oakland-Alameda County Stadium (14-12) | 21-22 | |
| » W: Jay Howell (3-2) L: Dave Righetti (3-4) | Third | 4 out |
| Wednesday, May 29 |
| » Defeated Tigers (24-18), 4-2 | Tiger Stadium (1-0) | 22-22 | Won 2 |
| » W: Chris Codiroli (6-2) L: Milt Wilcox (1-3) | Second | 3 out |
| Thursday, May 30 |
| » Lost to Tigers (25-18), 3-2 | Tiger Stadium (1-1) | 22-23 | |
| » W: Walt Terrell (6-1) L: Tim Birtsas (1-1) S: Willie Hernandez (11) | Third | 3 out |
| Friday, May 31 |
| » Lost to Orioles (26-19), 9-2 | Memorial Stadium (0-1) | 22-24 | Lost 2 |
| » W: Dennis Martinez (4-3) L: Bill Krueger (4-5) S: Nate Snell (2) | Fourth | 4 out |
| Saturday, June 1 |
| » Defeated Orioles (26-20), 3-1 | Memorial Stadium (1-1) | 23-24 | |
| » W: Don Sutton (4-5) L: Mike Boddicker (6-4) S: Jay Howell (11) | Fourth | 4 out |
| Sunday, June 2 |
| » Lost to Orioles (27-20), 10-1 | Memorial Stadium (1-2) | 23-25 | |
| » W: Scott McGregor (4-4) L: Mike Warren (1-4) | Fourth | 4 out |
| » Major-league debuts: Charlie O'Brien (Athletics) |
| Monday, June 3 |
| » Lost to Yankees (26-21), 5-2 | Yankee Stadium (0-1) | 23-26 | Lost 2 |
| » W: Phil Niekro (7-3) L: Chris Codiroli (6-3) | Fourth | 4 out |
| Tuesday, June 4 |
| » Defeated Yankees (26-22), 2-0 | Yankee Stadium (1-1) | 24-26 | |
| » W: Tim Birtsas (2-1) L: Joe Cowley (4-3) S: Jay Howell (12) | Fourth | 4 out |
| Friday, June 7 |
| » Lost to Rangers (20-32), 4-2 | Oakland-Alameda County Stadium (14-13) | 24-27 | |
| » W: Dave Schmidt (3-2) L: Jay Howell (3-3) | Fourth | 3½ out |
| Saturday, June 8 |
| » Defeated Rangers (20-33), 6-5 | Oakland-Alameda County Stadium (15-13) | 25-27 | |
| » W: Chris Codiroli (7-3) L: Charlie Hough (5-5) S: Keith Atherton (1) | Fourth | 3 out |
| Sunday, June 9 |
| » Lost to Rangers (21-33), 8-4 | Oakland-Alameda County Stadium (15-14) | 25-28 | |
| » W: Dickie Noles (3-6) L: Bill Krueger (4-6) | Fourth | 3 out |
| » Defeated Rangers (21-34), 6-5 | Oakland-Alameda County Stadium (16-14) | 26-28 | |
| » W: Jay Howell (4-3) L: Chris Welsh (0-1) | Fourth | 3 out |
| Monday, June 10 |
| » Defeated Royals (28-26), 2-1 | Oakland-Alameda County Stadium (17-14) | 27-28 | Won 2 |
| » W: Jay Howell (5-3) L: Dan Quisenberry (3-4) | Fourth | 3 out |
| Tuesday, June 11 |
| » Defeated Royals (28-27), 4-3 | Oakland-Alameda County Stadium (18-14) | 28-28 | Won 3 |
| » W: Jay Howell (6-3) L: Bud Black (5-6) | Fourth | 2½ out |
| Wednesday, June 12 |
| » Lost to Royals (29-27), 3-2 | Oakland-Alameda County Stadium (18-15) | 28-29 | |
| » W: Mike Jones (1-2) L: Steve McCatty (2-3) | Fourth | 3½ out |
| Thursday, June 13 |
| » Major-league debuts: Bill Wilkinson (Mariners) |
| Friday, June 14 |
| » Lost to Indians (20-37), 6-1 | Cleveland Stadium (0-1) | 28-30 | Lost 2 |
| » W: Bert Blyleven (5-6) L: Bill Krueger (4-7) | Fourth | 4 out |
| Saturday, June 15 |
| » Defeated Indians (20-38), 8-6 | Cleveland Stadium (1-1) | 29-30 | |
| » W: Tim Birtsas (3-1) L: Neal Heaton (4-6) S: Jay Howell (13) | Fourth | 4 out |
| Sunday, June 16 |
| » Defeated Indians (20-39), 3-2 | Cleveland Stadium (2-1) | 30-30 | Won 2 |
| » W: Don Sutton (5-5) L: Tom Waddell (2-4) S: Jay Howell (14) | Third | 2½ out |
| » Defeated Indians (20-40), 11-6 | Cleveland Stadium (3-1) | 31-30 | Won 3 |
| » W: Steve McCatty (3-3) L: Vern Ruhle (1-3) | Third | 2½ out |
| Tuesday, June 18 |
| » Lost to White Sox (33-26), 4-3 | Comiskey Park I (0-1) | 31-31 | |
| » W: Gene Nelson (4-2) L: Keith Atherton (2-3) | Fourth | 3½ out |
| Wednesday, June 19 |
| » Lost to White Sox (34-26), 8-7 | Comiskey Park I (0-2) | 31-32 | Lost 2 |
| » W: Bob James (3-2) L: Rick Langford (0-1) | Fourth | 4½ out |
| Thursday, June 20 |
| » Defeated White Sox (34-27), 12-1 | Comiskey Park I (1-2) | 32-32 | |
| » W: Tim Birtsas (4-1) L: Tom Seaver (7-5) | Fourth | 3½ out |
| Friday, June 21 |
| » Defeated Indians (21-43), 9-1 | Oakland-Alameda County Stadium (19-15) | 33-32 | Won 2 |
| » W: Don Sutton (6-5) L: Rick Behenna (0-2) | Fourth | 3 out |
| Saturday, June 22 |
| » Defeated Indians (21-44), 6-4 | Oakland-Alameda County Stadium (20-15) | 34-32 | Won 3 |
| » W: Jay Howell (7-3) L: Jeff Barkley (0-1) | Third | 3 out |
| Sunday, June 23 |
| » Defeated Indians (21-45), 9-3 | Oakland-Alameda County Stadium (21-15) | 35-32 | Won 4 |
| » W: Chris Codiroli (8-3) L: Neal Heaton (4-8) | Third | 3 out |
| Monday, June 24 |
| » Lost to White Sox (35-30), 7-1 | Oakland-Alameda County Stadium (21-16) | 35-33 | |
| » W: Dan Spillner (2-1) L: Tim Birtsas (4-2) S: Gene Nelson (2) | Third | 3 out |
| Tuesday, June 25 |
| » Defeated White Sox (35-31), 5-4 | Oakland-Alameda County Stadium (22-16) | 36-33 | |
| » W: Keith Atherton (3-3) L: Gene Nelson (4-3) | Third | 3 out |
| Wednesday, June 26 |
| » Defeated White Sox (35-32), 10-0 | Oakland-Alameda County Stadium (23-16) | 37-33 | Won 2 |
| » W: Don Sutton (7-5) L: Floyd Bannister (5-6) | Second | 3 out |
| Friday, June 28 |
| » Lost to Rangers (28-44), 7-5 | Arlington Stadium (0-1) | 37-34 | |
| » W: Greg Harris (2-1) L: Keith Atherton (3-4) | Second | 3 out |
| Saturday, June 29 |
| » Defeated Rangers (28-45), 7-6 | Arlington Stadium (1-1) | 38-34 | |
| » W: Bill Krueger (5-7) L: Dave Rozema (3-5) S: Jay Howell (15) | Second | 3 out |
| Sunday, June 30 |
| » Defeated Rangers (28-46), 7-4 | Arlington Stadium (2-1) | 39-34 | Won 2 |
| » W: Steve McCatty (4-3) L: Charlie Hough (5-10) S: Jay Howell (16) | Second | 2 out |
| Monday, July 1 |
| » Defeated Royals (37-36), 4-3 | Royals Stadium (1-0) | 40-34 | Won 3 |
| » W: Keith Atherton (4-4) L: Danny Jackson (6-5) S: Jay Howell (17) | Second | 1 out |
| Tuesday, July 2 |
| » Lost to Royals (38-36), 10-1 | Royals Stadium (1-1) | 40-35 | |
| » W: Charlie Leibrandt (7-5) L: Rick Langford (0-2) | Second | 2 out |
| Wednesday, July 3 |
| » Lost to Royals (39-36), 3-0 | Royals Stadium (1-2) | 40-36 | Lost 2 |
| » W: Bret Saberhagen (8-4) L: Chris Codiroli (8-4) S: Dan Quisenberry (15) | Second | 3 out |
| Thursday, July 4 |
| » Defeated Blue Jays (47-31), 3-2 | Oakland-Alameda County Stadium (24-16) | 41-36 | |
| » W: Jay Howell (8-3) L: Bill Caudill (4-4) | Second | 3 out |
| Friday, July 5 |
| » Lost to Blue Jays (48-31), 8-2 | Oakland-Alameda County Stadium (24-17) | 41-37 | |
| » W: Jim Clancy (5-4) L: Bill Krueger (5-8) | Second | 4 out |
| Saturday, July 6 |
| » Defeated Blue Jays (48-32), 5-1 | Oakland-Alameda County Stadium (25-17) | 42-37 | |
| » W: Don Sutton (8-5) L: Doyle Alexander (7-6) | Second | 3 out |
| Sunday, July 7 |
| » Lost to Blue Jays (49-32), 8-2 | Oakland-Alameda County Stadium (25-18) | 42-38 | |
| » W: Jimmy Key (7-3) L: Steve McCatty (4-4) | Second | 4 out |
| Monday, July 8 |
| » Lost to Red Sox (41-40), 2-1 | Oakland-Alameda County Stadium (25-19) | 42-39 | Lost 2 |
| » W: Bruce Hurst (5-7) L: Chris Codiroli (8-5) S: Steve Crawford (2) | Second | 5 out |
| Tuesday, July 9 |
| » Lost to Red Sox (42-40), 6-3 | Oakland-Alameda County Stadium (25-20) | 42-40 | Lost 3 |
| » W: Oil Can Boyd (10-7) L: Steve Ontiveros (0-1) | Second | 6 out |
| Wednesday, July 10 |
| » Defeated Red Sox (42-41), 5-4 | Oakland-Alameda County Stadium (26-20) | 43-40 | |
| » W: Bill Krueger (6-8) L: Bob Ojeda (4-5) S: Jay Howell (18) | Second | 6 out |
| Thursday, July 11 |
| » Defeated Brewers (36-45), 9-3 | Oakland-Alameda County Stadium (27-20) | 44-40 | Won 2 |
| » W: Don Sutton (9-5) L: Pete Vuckovich (3-7) | Second | 5 out |
| Friday, July 12 |
| » Lost to Brewers (37-45), 5-3 | Oakland-Alameda County Stadium (27-21) | 44-41 | |
| » W: Teddy Higuera (6-5) L: Chris Codiroli (8-6) | Second | 6 out |
| Saturday, July 13 |
| » Defeated Brewers (37-46), 2-0 | Oakland-Alameda County Stadium (28-21) | 45-41 | |
| » W: Tim Birtsas (5-2) L: Danny Darwin (6-9) S: Steve Ontiveros (1) | Second | 6 out |
| Sunday, July 14 |
| » Defeated Brewers (37-47), 11-2 | Oakland-Alameda County Stadium (29-21) | 46-41 | Won 2 |
| » W: Bill Krueger (7-8) L: Moose Haas (7-5) S: Keith Atherton (2) | Second | 6 out |
| Thursday, July 18 |
| » Defeated Blue Jays (53-36), 6-4 | Exhibition Stadium (2-1) | 47-41 | Won 3 |
| » W: Steve Ontiveros (1-1) L: Gary Lavelle (3-5) S: Jay Howell (19) | Second | 5 out |
| Friday, July 19 |
| » Lost to Blue Jays (54-36), 5-1 | Exhibition Stadium (2-2) | 47-42 | |
| » W: Jimmy Key (8-4) L: Don Sutton (9-6) | Second | 6 out |
| Saturday, July 20 |
| » Defeated Blue Jays (54-37), 5-1 | Exhibition Stadium (3-2) | 48-42 | |
| » W: Tim Birtsas (6-2) L: Dave Stieb (9-6) S: Steve Ontiveros (2) | Second | 6 out |
| » Major-league debuts: Cecil Fielder (Blue Jays) |
| Sunday, July 21 |
| » Lost to Blue Jays (55-37), 11-4 | Exhibition Stadium (3-3) | 48-43 | |
| » W: Dennis Lamp (6-0) L: Bill Krueger (7-9) | Second | 6 out |
| Monday, July 22 |
| » Lost to Red Sox (48-44), 6-4 | Fenway Park (2-2) | 48-44 | Lost 2 |
| » W: Tim Lollar (4-5) L: Chris Codiroli (8-7) S: Bob Stanley (9) | Second | 6 out |
| Tuesday, July 23 |
| » Lost to Red Sox (49-44), 3-2 | Fenway Park (2-3) | 48-45 | Lost 3 |
| » W: Bruce Hurst (7-7) L: Rick Langford (0-3) | Fourth | 7 out |
| Wednesday, July 24 |
| » Lost to Red Sox (50-44), 6-5 | Fenway Park (2-4) | 48-46 | Lost 4 |
| » W: Bob Stanley (5-5) L: Jay Howell (8-4) | Fourth | 8 out |
| Thursday, July 25 |
| » Defeated Brewers (40-52), 11-2 | County Stadium (3-0) | 49-46 | |
| » W: Tim Birtsas (7-2) L: Jaime Cocanower (1-1) | Third | 7 out |
| Friday, July 26 |
| » Defeated Brewers (40-53), 7-3 | County Stadium (4-0) | 50-46 | Won 2 |
| » W: Tommy John (3-4) L: Ray Burris (5-8) S: Keith Atherton (3) | Third | 6 out |
| Saturday, July 27 |
| » Lost to Brewers (41-53), 4-3 | County Stadium (4-1) | 50-47 | |
| » W: Pete Vuckovich (5-7) L: Chris Codiroli (8-8) S: Rollie Fingers (11) | Third | 6 out |
| Sunday, July 28 |
| » Defeated Brewers (41-54), 5-2 | County Stadium (5-1) | 51-47 | |
| » W: Bill Krueger (8-9) L: Danny Darwin (6-12) S: Jay Howell (20) | Third | 5 out |
| Tuesday, July 30 |
| » Defeated Angels (56-43), 5-4 | Oakland-Alameda County Stadium (30-21) | 52-47 | Won 2 |
| » W: Jay Howell (9-4) L: Donnie Moore (7-4) | Third | 4 out |
| Wednesday, July 31 |
| » Lost to Angels (57-43), 8-5 | Oakland-Alameda County Stadium (30-22) | 52-48 | |
| » W: Ron Romanick (13-4) L: Rick Langford (0-4) | Third | 5 out |
| Thursday, August 1 |
| » Defeated Angels (57-44), 3-1 | Oakland-Alameda County Stadium (31-22) | 53-48 | |
| » W: Chris Codiroli (9-8) L: Urbano Lugo (3-4) S: Jay Howell (21) | Third | 4 out |
| Friday, August 2 |
| » Defeated Mariners (48-54), 3-1 | Oakland-Alameda County Stadium (32-22) | 54-48 | Won 2 |
| » W: Rick Langford (1-4) L: Mark Langston (5-8) S: Steve Ontiveros (3) | Third | 4 out |
| Saturday, August 3 |
| » Lost to Mariners (49-54), 6-2 | Oakland-Alameda County Stadium (32-23) | 54-49 | |
| » W: Mike Moore (10-6) L: Bill Krueger (8-10) | Third | 5 out |
| Sunday, August 4 |
| » Defeated Mariners (49-55), 5-3 | Oakland-Alameda County Stadium (33-23) | 55-49 | |
| » W: Don Sutton (10-6) L: Matt Young (7-12) S: Jay Howell (22) | Third | 5 out |
| Monday, August 5 |
| » Defeated Twins (46-57), 5-1 | Oakland-Alameda County Stadium (34-23) | 56-49 | Won 2 |
| » W: Tim Birtsas (8-2) L: Mike Smithson (11-8) S: Jay Howell (23) | Third | 5 out |
| Thursday, August 8 |
| » Defeated Mariners (49-57), 11-2 | Kingdome (1-3) | 57-49 | Won 3 |
| » W: Chris Codiroli (10-8) L: Mark Langston (5-9) | Third | 4 out |
| Friday, August 9 |
| » Defeated Mariners (49-58), 6-4 | Kingdome (2-3) | 58-49 | Won 4 |
| » W: Don Sutton (11-6) L: Mike Moore (10-7) S: Steve Ontiveros (4) | Third | 3 out |
| Saturday, August 10 |
| » Defeated Mariners (49-59), 11-5 | Kingdome (3-3) | 59-49 | Won 5 |
| » W: Tim Birtsas (9-2) L: Matt Young (7-13) | Third | 3 out |
| Sunday, August 11 |
| » Lost to Mariners (50-59), 9-6 | Kingdome (3-4) | 59-50 | |
| » W: Bill Swift (4-6) L: Rick Langford (1-5) S: Edwin Nunez (13) | Third | 4 out |
| Monday, August 12 |
| » Lost to Twins (49-59), 4-3 | Hubert H. Humphrey Metrodome (0-5) | 59-51 | Lost 2 |
| » W: Bert Blyleven (11-12) L: Jose Rijo (0-1) | Third | 5 out |
| » Lost to Twins (50-59), 5-4 | Hubert H. Humphrey Metrodome (0-6) | 59-52 | Lost 3 |
| » W: Steve Howe (2-1) L: Chris Codiroli (10-9) S: Ron Davis (17) | Third | 5 out |
| Tuesday, August 13 |
| » Lost to Twins (51-59), 8-1 | Hubert H. Humphrey Metrodome (0-7) | 59-53 | Lost 4 |
| » W: Frank Viola (12-9) L: Tommy John (3-5) | Third | 5 out |
| Wednesday, August 14 |
| » Defeated Twins (51-60), 5-0 | Hubert H. Humphrey Metrodome (1-7) | 60-53 | |
| » W: Don Sutton (12-6) L: Mike Smithson (11-10) | Third | 4 out |
| » Defeated Twins (51-61), 7-4 | Hubert H. Humphrey Metrodome (2-7) | 61-53 | Won 2 |
| » W: Jose Rijo (1-1) L: Mark Portugal (0-1) S: Steve Ontiveros (5) | Third | 4 out |
| » Major-league debuts: Mark Portugal (Twins) |
| Friday, August 16 |
| » Lost to Angels (66-49), 5-2 | Anaheim Stadium (2-2) | 61-54 | |
| » W: John Candelaria (4-4) L: Tim Birtsas (9-3) S: Stew Cliburn (4) | Third | 5 out |
| Saturday, August 17 |
| » Lost to Angels (67-49), 9-5 | Anaheim Stadium (2-3) | 61-55 | Lost 2 |
| » W: Mike Witt (10-7) L: Chris Codiroli (10-10) S: Jim Slaton (1) | Third | 6 out |
| Sunday, August 18 |
| » Defeated Angels (67-50), 4-3 | Anaheim Stadium (3-3) | 62-55 | |
| » W: Jose Rijo (2-1) L: Donnie Moore (7-6) S: Steve Ontiveros (6) | Third | 5 out |
| Monday, August 19 |
| » Lost to Angels (68-50), 5-4 | Anaheim Stadium (3-4) | 62-56 | |
| » W: Kirk McCaskill (9-7) L: Don Sutton (12-7) S: Stew Cliburn (5) | Third | 6 out |
| Tuesday, August 20 |
| » Lost to Tigers (64-54), 4-1 | Oakland-Alameda County Stadium (34-24) | 62-57 | Lost 2 |
| » W: Walt Terrell (12-6) L: Tim Birtsas (9-4) S: Willie Hernandez (26) | Third | 6 out |
| Wednesday, August 21 |
| » Defeated Tigers (64-55), 4-3 | Oakland-Alameda County Stadium (35-24) | 63-57 | |
| » W: Steve Mura (1-0) L: Willie Hernandez (7-8) | Third | 5 out |
| Thursday, August 22 |
| » Lost to Tigers (65-55), 5-3 | Oakland-Alameda County Stadium (35-25) | 63-58 | |
| » W: Bill Scherrer (2-1) L: Keith Atherton (4-5) S: Chuck Cary (1) | Third | 6 out |
| » Major-league debuts: Chuck Cary (Tigers) |
| Friday, August 23 |
| » Lost to Orioles (63-56), 7-2 | Oakland-Alameda County Stadium (35-26) | 63-59 | Lost 2 |
| » W: Mike Boddicker (11-13) L: Jay Howell (9-5) | Third | 7 out |
| Saturday, August 24 |
| » Lost to Orioles (64-56), 4-3 | Oakland-Alameda County Stadium (35-27) | 63-60 | Lost 3 |
| » W: Don Aase (8-5) L: Keith Atherton (4-6) S: Sammy Stewart (8) | Third | 7 out |
| Sunday, August 25 |
| » Defeated Orioles (64-57), 10-4 | Oakland-Alameda County Stadium (36-27) | 64-60 | |
| » W: Tim Birtsas (10-4) L: Mike Flanagan (2-3) | Third | 7 out |
| Monday, August 26 |
| » Defeated Yankees (73-50), 3-2 | Oakland-Alameda County Stadium (37-27) | 65-60 | Won 2 |
| » W: Rick Langford (2-5) L: Bob Shirley (3-4) | Third | 6 out |
| Tuesday, August 27 |
| » Defeated Yankees (73-51), 3-0 | Oakland-Alameda County Stadium (38-27) | 66-60 | Won 3 |
| » W: Tommy John (4-5) L: Ron Guidry (16-5) S: Steve Ontiveros (7) | Third | 6 out |
| Thursday, August 29 |
| » Lost to Tigers (68-58), 3-2 | Tiger Stadium (1-2) | 66-61 | |
| » W: Bill Scherrer (3-1) L: Steve Mura (1-1) | Third | 6 out |
| Friday, August 30 |
| » Defeated Tigers (68-59), 8-3 | Tiger Stadium (2-2) | 67-61 | |
| » W: Don Sutton (13-7) L: Jack Morris (14-8) | Third | 6 out |
| Saturday, August 31 |
| » Lost to Tigers (69-59), 4-1 | Tiger Stadium (2-3) | 67-62 | |
| » W: Walt Terrell (13-7) L: Tim Birtsas (10-5) S: Willie Hernandez (28) | Third | 6 out |
| Sunday, September 1 |
| » Lost to Tigers (70-59), 14-3 | Tiger Stadium (2-4) | 67-63 | Lost 2 |
| » W: Juan Berenguer (4-3) L: Chris Codiroli (10-11) | Third | 6 out |
| Monday, September 2 |
| » Lost to Orioles (68-60), 12-4 | Memorial Stadium (1-3) | 67-64 | Lost 3 |
| » W: Scott McGregor (11-12) L: Tommy John (4-6) S: Ken Dixon (1) | Third | 7 out |
| » Major-league debuts: Jose Canseco (Athletics) |
| Tuesday, September 3 |
| » Defeated Orioles (68-61), 3-2 | Memorial Stadium (2-3) | 68-64 | |
| » W: Jose Rijo (3-1) L: Mike Boddicker (12-14) S: Jay Howell (24) | Third | 6 out |
| Wednesday, September 4 |
| » Lost to Orioles (69-61), 6-1 | Memorial Stadium (2-4) | 68-65 | |
| » W: Storm Davis (9-7) L: Don Sutton (13-8) | Third | 7 out |
| Thursday, September 5 |
| » Lost to Yankees (80-52), 7-3 | Yankee Stadium (1-2) | 68-66 | Lost 2 |
| » W: Ed Whitson (9-7) L: Keith Atherton (4-7) | Third | 7½ out |
| Friday, September 6 |
| » Lost to Yankees (81-52), 8-4 | Yankee Stadium (1-3) | 68-67 | Lost 3 |
| » W: Bob Shirley (5-4) L: Chris Codiroli (10-12) | Third | 8 out |
| Saturday, September 7 |
| » Lost to Yankees (82-52), 3-2 | Yankee Stadium (1-4) | 68-68 | Lost 4 |
| » W: Ron Guidry (18-5) L: Tommy John (4-7) S: Brian Fisher (11) | Fourth | 9 out |
| Sunday, September 8 |
| » Lost to Yankees (83-52), 9-6 | Yankee Stadium (1-5) | 68-69 | Lost 5 |
| » W: Phil Niekro (15-9) L: Jose Rijo (3-2) | Fourth | 10 out |
| Monday, September 9 |
| » Lost to Rangers (50-86), 3-1 | Oakland-Alameda County Stadium (38-28) | 68-70 | Lost 6 |
| » W: Jeff Russell (2-5) L: Steve Ontiveros (1-2) S: Greg Harris (9) | Fourth | 10 out |
| Tuesday, September 10 |
| » Defeated Rangers (50-87), 10-3 | Oakland-Alameda County Stadium (39-28) | 69-70 | |
| » W: Chris Codiroli (11-12) L: Jose Guzman (0-1) | Fourth | 10 out |
| » Major-league debuts: Jose Guzman (Rangers) |
| Wednesday, September 11 |
| » Lost to Rangers (51-87), 6-3 | Oakland-Alameda County Stadium (39-29) | 69-71 | |
| » W: Mike Mason (7-13) L: Tim Conroy (0-1) S: Greg Harris (10) | Fourth | 11 out |
| Friday, September 13 |
| » Lost to Royals (80-59), 5-2 | Oakland-Alameda County Stadium (39-30) | 69-72 | Lost 2 |
| » W: Mark Gubicza (13-7) L: Jose Rijo (3-3) S: Dan Quisenberry (34) | Fourth | 12 out |
| Saturday, September 14 |
| » Lost to Royals (81-59), 2-1 | Oakland-Alameda County Stadium (39-31) | 69-73 | Lost 3 |
| » W: Bret Saberhagen (18-6) L: Tommy John (4-8) | Fourth | 13 out |
| Sunday, September 15 |
| » Defeated Royals (81-60), 4-2 | Oakland-Alameda County Stadium (40-31) | 70-73 | |
| » W: Chris Codiroli (12-12) L: Charlie Leibrandt (15-8) S: Jay Howell (25) | Fourth | 13 out |
| » Lost to Royals (82-60), 7-2 | Oakland-Alameda County Stadium (40-32) | 70-74 | |
| » W: Bud Black (9-14) L: Curt Young (0-3) | Fourth | 13 out |
| Tuesday, September 17 |
| » Lost to Indians (54-93), 15-8 | Cleveland Stadium (3-2) | 70-75 | Lost 2 |
| » W: Curt Wardle (8-7) L: Tim Birtsas (10-6) S: Bryan Clark (2) | Fourth | 12½ out |
| Wednesday, September 18 |
| » Defeated Indians (54-94), 1-0 | Cleveland Stadium (4-2) | 71-75 | |
| » W: Jose Rijo (4-3) L: Don Schulze (3-9) S: Jay Howell (26) | Fourth | 11½ out |
| Friday, September 20 |
| » Lost to White Sox (75-71), 10-4 | Comiskey Park I (1-3) | 71-76 | |
| » W: Floyd Bannister (7-14) L: Tommy John (4-9) | Third | 12 out |
| Saturday, September 21 |
| » Defeated White Sox (75-72), 8-3 | Comiskey Park I (2-3) | 72-76 | |
| » W: Chris Codiroli (13-12) L: Britt Burns (18-9) S: Steve Ontiveros (8) | Third | 12 out |
| Sunday, September 22 |
| » Lost to White Sox (76-72), 7-5 | Comiskey Park I (2-4) | 72-77 | |
| » W: Bob James (7-6) L: Jay Howell (9-6) | Fourth | 13 out |
| Monday, September 23 |
| » Defeated Indians (54-98), 8-7 | Oakland-Alameda County Stadium (41-32) | 73-77 | |
| » W: Jose Rijo (5-3) L: Curt Wardle (8-8) S: Jay Howell (27) | Fourth | 12 out |
| Tuesday, September 24 |
| » Defeated Indians (54-99), 10-8 | Oakland-Alameda County Stadium (42-32) | 74- |