| Monday, March 7 |
| Future Athletic Jairo Garcia is born in Nizao, D.R. |
| Wednesday, March 30 |
| Former Athletic Joe Cicero dies in Clearwater, FL at the age of 73. |
| Monday, April 4 |
| » Lost to Indians (1-0), 8-5 | Oakland-Alameda County Stadium (0-1) | 0-1 | |
| » W: Rick Sutcliffe (1-0) L: Rick Langford (0-1) S: Dan Spillner (1) | Third | 1 out |
| Wednesday, April 6 |
| » Defeated Indians (1-1), 5-3 | Oakland-Alameda County Stadium (1-1) | 1-1 | |
| » W: Mike Norris (1-0) L: Bert Blyleven (0-1) S: Dave Beard (1) | Third | 1½ out |
| Thursday, April 7 |
| » Lost to Indians (2-1), 9-1 | Oakland-Alameda County Stadium (1-2) | 1-2 | |
| » W: Len Barker (1-0) L: Tom Underwood (0-1) | Fourth | 2 out |
| Friday, April 8 |
| » Defeated Angels (2-2), 5-3 | Oakland-Alameda County Stadium (2-2) | 2-2 | |
| » W: Dave Beard (1-0) L: Geoff Zahn (0-1) | Third | 1 out |
| Saturday, April 9 |
| » Lost to Angels (3-2), 10-2 | Oakland-Alameda County Stadium (2-3) | 2-3 | |
| » W: Ken Forsch (1-0) L: Matt Keough (0-1) S: Luis Sanchez (1) | Fourth | 2 out |
| Sunday, April 10 |
| » Defeated Angels (3-3), 11-4 | Oakland-Alameda County Stadium (3-3) | 3-3 | |
| » W: Bill Krueger (1-0) L: Bruce Kison (1-1) | Third | 2 out |
| » Major-league debuts: Bill Krueger (Athletics) |
| Tuesday, April 12 |
| » Defeated Twins (3-4), 4-3 | Oakland-Alameda County Stadium (4-3) | 4-3 | Won 2 |
| » W: Dave Beard (2-0) L: Len Whitehouse (0-1) | Third | 2 out |
| Wednesday, April 13 |
| » Defeated Twins (3-5), 5-4 | Oakland-Alameda County Stadium (5-3) | 5-3 | Won 3 |
| » W: Steve Baker (1-0) L: Albert Williams (1-1) | Second | 1 out |
| Thursday, April 14 |
| » Defeated Mariners (4-6), 5-3 | Kingdome (1-0) | 6-3 | Won 4 |
| » W: Chris Codiroli (1-0) L: Edwin Nunez (0-1) S: Dave Beard (2) | Second | ½ out |
| Friday, April 15 |
| » Lost to Mariners (5-6), 5-1 | Kingdome (1-1) | 6-4 | |
| » W: Gaylord Perry (1-1) L: Matt Keough (0-2) | Third | ½ out |
| Saturday, April 16 |
| » Defeated Mariners (5-7), 5-2 | Kingdome (2-1) | 7-4 | |
| » W: Bill Krueger (2-0) L: Matt Young (1-2) S: Dave Beard (3) | First | -- |
| Sunday, April 17 |
| » Defeated Mariners (5-8), 7-4 | Kingdome (3-1) | 8-4 | Won 2 |
| » W: Mike Norris (2-0) L: Bob Stoddard (1-2) S: Tom Burgmeier (1) | First | -- |
| Monday, April 18 |
| » Defeated Angels (7-6), 5-3 | Anaheim Stadium (1-0) | 9-4 | Won 3 |
| » W: Tom Underwood (1-1) L: Mike Witt (0-3) S: Steve Baker (1) | First | -- |
| Thursday, April 21 |
| » Lost to Angels (8-6), 6-2 | Anaheim Stadium (1-1) | 9-5 | |
| » W: Geoff Zahn (2-1) L: Chris Codiroli (1-1) | First | -- |
| » Lost to Angels (9-6), 6-5 | Anaheim Stadium (1-2) | 9-6 | Lost 2 |
| » W: Ken Forsch (3-0) L: Matt Keough (0-3) S: Luis Sanchez (2) | First | -- |
| Friday, April 22 |
| » Lost to Red Sox (7-7), 3-1 | Oakland-Alameda County Stadium (5-4) | 9-7 | Lost 3 |
| » W: Bruce Hurst (2-1) L: Bill Krueger (2-1) S: Bob Stanley (3) | Fourth | 2½ out |
| Sunday, April 24 |
| » Lost to Red Sox (8-7), 4-2 | Oakland-Alameda County Stadium (5-5) | 9-8 | Lost 4 |
| » W: John Tudor (1-1) L: Mike Norris (2-1) S: Bob Stanley (4) | Third | 2 out |
| Tuesday, April 26 |
| » Defeated Orioles (9-8), 4-3 | Oakland-Alameda County Stadium (6-5) | 10-8 | |
| » W: Chris Codiroli (2-1) L: Jim Palmer (1-1) S: Tom Burgmeier (2) | Third | 2 out |
| Wednesday, April 27 |
| » Lost to Orioles (10-8), 6-0 | Oakland-Alameda County Stadium (6-6) | 10-9 | |
| » W: Mike Flanagan (3-0) L: Bill Krueger (2-2) S: Sammy Stewart (1) | Third | 2 out |
| Friday, April 29 |
| » Defeated Tigers (8-9), 5-4 | Oakland-Alameda County Stadium (7-6) | 11-9 | |
| » W: Steve Baker (2-0) L: Jack Morris (2-3) S: Steve McCatty (1) | Third | 2 out |
| Sunday, May 1 |
| » Defeated Tigers (8-10), 8-3 | Oakland-Alameda County Stadium (8-6) | 12-9 | Won 2 |
| » W: Chris Codiroli (3-1) L: Jerry Ujdur (0-3) | First | -- |
| » Defeated Tigers (8-11), 2-0 | Oakland-Alameda County Stadium (9-6) | 13-9 | Won 3 |
| » W: Mike Norris (3-1) L: Milt Wilcox (2-3) S: Steve McCatty (2) | First | -- |
| Tuesday, May 3 |
| » Lost to Red Sox (12-9), 3-1 | Fenway Park (0-1) | 13-10 | |
| » W: Dennis Eckersley (3-1) L: Bill Krueger (2-3) S: Bob Stanley (7) | Second | 1½ out |
| Wednesday, May 4 |
| » Lost to Red Sox (13-9), 7-1 | Fenway Park (0-2) | 13-11 | Lost 2 |
| » W: Bruce Hurst (3-1) L: Rick Langford (0-2) | Third | 1 out |
| Friday, May 6 |
| » Lost to Orioles (14-10), 9-2 | Memorial Stadium (0-1) | 13-12 | Lost 3 |
| » W: Dennis Martinez (2-5) L: Mike Norris (3-2) | Fourth | 2 out |
| Saturday, May 7 |
| » Lost to Orioles (15-10), 8-6 | Memorial Stadium (0-2) | 13-13 | Lost 4 |
| » W: Mike Flanagan (5-0) L: Chris Codiroli (3-2) S: Tippy Martinez (3) | Fifth | 3 out |
| Sunday, May 8 |
| » Defeated Orioles (15-11), 1-0 | Memorial Stadium (1-2) | 14-13 | |
| » W: Bill Krueger (3-3) L: Tippy Martinez (0-1) S: Dave Beard (4) | Third | 2 out |
| Tuesday, May 10 |
| » Lost to Tigers (11-14), 4-3 | Tiger Stadium (0-1) | 14-14 | |
| » W: Dave Rucker (1-0) L: Rick Langford (0-3) S: Aurelio Lopez (2) | Fourth | 2½ out |
| Wednesday, May 11 |
| » Lost to Tigers (12-14), 5-2 | Tiger Stadium (0-2) | 14-15 | Lost 2 |
| » W: Milt Wilcox (3-4) L: Mike Norris (3-3) | Fourth | 3½ out |
| Thursday, May 12 |
| » Defeated Tigers (12-15), 11-4 | Tiger Stadium (1-2) | 15-15 | |
| » W: Tom Burgmeier (1-0) L: Dan Petry (3-1) | Fourth | 3 out |
| Friday, May 13 |
| » Defeated Mariners (11-23), 9-2 | Oakland-Alameda County Stadium (10-6) | 16-15 | Won 2 |
| » W: Bill Krueger (4-3) L: Bob Stoddard (2-5) | Fourth | 2 out |
| Saturday, May 14 |
| » Lost to Mariners (12-23), 4-1 | Oakland-Alameda County Stadium (10-7) | 16-16 | |
| » W: Matt Young (4-3) L: Rick Langford (0-4) S: Bill Caudill (7) | Fourth | 2 out |
| Sunday, May 15 |
| » Defeated Mariners (12-24), 3-0 | Oakland-Alameda County Stadium (11-7) | 17-16 | |
| » W: Tom Underwood (2-1) L: Jim Beattie (2-2) S: Steve McCatty (3) | Third | 1 out |
| Monday, May 16 |
| » Defeated Twins (15-20), 7-6 | Hubert H. Humphrey Metrodome (1-0) | 18-16 | Won 2 |
| » W: Mike Norris (4-3) L: Brad Havens (3-4) S: Tom Burgmeier (3) | Second | ½ out |
| Tuesday, May 17 |
| » Defeated Twins (15-21), 7-6 | Hubert H. Humphrey Metrodome (2-0) | 19-16 | Won 3 |
| » W: Chris Codiroli (4-2) L: Albert Williams (2-5) S: Steve McCatty (4) | Second | ½ out |
| Wednesday, May 18 |
| » Lost to Twins (16-21), 16-5 | Hubert H. Humphrey Metrodome (2-1) | 19-17 | |
| » W: Frank Viola (1-2) L: Bill Krueger (4-4) | Third | 1½ out |
| Friday, May 20 |
| » Defeated Yankees (18-18), 8-4 | Oakland-Alameda County Stadium (12-7) | 20-17 | |
| » W: Tom Underwood (3-1) L: Bob Shirley (2-3) S: Steve McCatty (5) | Second | 1 out |
| Saturday, May 21 |
| » Lost to Yankees (19-18), 1-0 | Oakland-Alameda County Stadium (12-8) | 20-18 | |
| » W: Shane Rawley (5-3) L: Mike Norris (4-4) S: Rich Gossage (5) | Second | 1 out |
| Sunday, May 22 |
| » Lost to Yankees (20-18), 4-2 | Oakland-Alameda County Stadium (12-9) | 20-19 | Lost 2 |
| » W: Ron Guidry (5-3) L: Tom Burgmeier (1-1) S: Rich Gossage (6) | Second | 1 out |
| Monday, May 23 |
| » Defeated Brewers (20-17), 5-4 | Oakland-Alameda County Stadium (13-9) | 21-19 | |
| » W: Steve Baker (3-0) L: Jim Slaton (5-1) | Second | 1 out |
| Tuesday, May 24 |
| » Defeated Brewers (20-18), 8-7 | Oakland-Alameda County Stadium (14-9) | 22-19 | Won 2 |
| » W: Matt Keough (1-3) L: Jamie Easterly (0-1) S: Steve Baker (2) | Second | 1 out |
| Wednesday, May 25 |
| » Lost to Brewers (21-18), 7-6 | Oakland-Alameda County Stadium (14-10) | 22-20 | |
| » W: Moose Haas (2-1) L: Tom Underwood (3-2) S: Tom Tellmann (3) | Second | 2 out |
| Friday, May 27 |
| » Lost to Yankees (21-21), 4-2 | Yankee Stadium (0-1) | 22-21 | Lost 2 |
| » W: Ron Guidry (6-3) L: Mike Norris (4-5) S: Rich Gossage (7) | Second | 3 out |
| Saturday, May 28 |
| » Lost to Yankees (22-21), 5-2 | Yankee Stadium (0-2) | 22-22 | Lost 3 |
| » W: Dave Righetti (7-2) L: Chris Codiroli (4-3) | Second | 4 out |
| Sunday, May 29 |
| » Lost to Yankees (23-21), 5-0 | Yankee Stadium (0-3) | 22-23 | Lost 4 |
| » W: Rudy May (1-2) L: Bill Krueger (4-5) | Third | 5 out |
| Monday, May 30 |
| » Lost to Yankees (24-21), 10-5 | Yankee Stadium (0-4) | 22-24 | Lost 5 |
| » W: Rich Gossage (2-1) L: Tom Burgmeier (1-2) | Fourth | 5 out |
| Tuesday, May 31 |
| » Lost to Brewers (23-21), 5-2 | County Stadium (0-1) | 22-25 | Lost 6 |
| » W: Moose Haas (3-1) L: Tim Conroy (0-1) | Fourth | 5 out |
| Wednesday, June 1 |
| » Defeated Brewers (23-22), 7-5 | County Stadium (1-1) | 23-25 | |
| » W: Tom Burgmeier (2-2) L: Chuck Porter (0-2) S: Tom Underwood (1) | Fourth | 4 out |
| Thursday, June 2 |
| » Lost to Brewers (24-22), 6-1 | County Stadium (1-2) | 23-26 | |
| » W: Mike Caldwell (5-4) L: Chris Codiroli (4-4) | Fourth | 5 out |
| Saturday, June 4 |
| » Defeated Indians (23-26), 6-3 | Cleveland Stadium (1-0) | 24-26 | |
| » W: Tom Burgmeier (3-2) L: Rick Waits (0-1) | Fourth | 5½ out |
| Sunday, June 5 |
| » Defeated Indians (23-27), 8-3 | Cleveland Stadium (2-0) | 25-26 | Won 2 |
| » W: Matt Keough (2-3) L: Neal Heaton (4-2) | Second | 4 out |
| » Defeated Indians (23-28), 9-2 | Cleveland Stadium (3-0) | 26-26 | Won 3 |
| » W: Steve McCatty (1-0) L: Len Barker (4-5) | Second | 4 out |
| Tuesday, June 7 |
| » Defeated Blue Jays (28-24), 5-3 | Oakland-Alameda County Stadium (15-10) | 27-26 | Won 4 |
| » W: Tim Conroy (1-1) L: Jim Gott (2-5) S: Steve Baker (3) | Second | 2½ out |
| Wednesday, June 8 |
| » Lost to Blue Jays (29-24), 5-2 | Oakland-Alameda County Stadium (15-11) | 27-27 | |
| » W: Dave Stieb (9-4) L: Chris Codiroli (4-5) S: Joey McLaughlin (6) | Fourth | 3½ out |
| Thursday, June 9 |
| » Defeated Blue Jays (29-25), 3-1 | Oakland-Alameda County Stadium (16-11) | 28-27 | |
| » W: Tom Underwood (4-2) L: Jim Clancy (5-5) S: Steve Baker (4) | Third | 3½ out |
| Friday, June 10 |
| » Defeated White Sox (25-30), 2-1 | Oakland-Alameda County Stadium (17-11) | 29-27 | Won 2 |
| » W: Tom Burgmeier (4-2) L: Dick Tidrow (1-1) | Third | 3½ out |
| Saturday, June 11 |
| » Defeated White Sox (25-31), 5-4 | Oakland-Alameda County Stadium (18-11) | 30-27 | Won 3 |
| » W: Tim Conroy (2-1) L: La Marr Hoyt (6-7) | Third | 2½ out |
| Sunday, June 12 |
| » Lost to White Sox (26-31), 12-10 | Oakland-Alameda County Stadium (18-12) | 30-28 | |
| » W: Dick Tidrow (2-1) L: Mike Warren (0-1) | Fourth | 3 out |
| » Lost to White Sox (27-31), 8-1 | Oakland-Alameda County Stadium (18-13) | 30-29 | Lost 2 |
| » W: Jerry Koosman (5-1) L: Chris Codiroli (4-6) | Fourth | 3 out |
| » Major-league debuts: Joel Skinner (White Sox) |
| Monday, June 13 |
| » Major-league debuts: Houston Jimenez (Twins) |
| Tuesday, June 14 |
| » Lost to Blue Jays (32-26), 13-7 | Exhibition Stadium (0-1) | 30-30 | Lost 3 |
| » W: Roy Lee Jackson (5-1) L: Tom Underwood (4-3) | Fourth | 4 out |
| Wednesday, June 15 |
| » Defeated Blue Jays (32-27), 10-1 | Exhibition Stadium (1-1) | 31-30 | |
| » W: Bill Krueger (5-5) L: Luis Leal (5-6) | Third | 3 out |
| Thursday, June 16 |
| » Lost to Blue Jays (33-27), 9-1 | Exhibition Stadium (1-2) | 31-31 | |
| » W: Jim Gott (4-5) L: Steve McCatty (1-1) | Fourth | 3½ out |
| Friday, June 17 |
| » Lost to White Sox (29-32), 6-3 | Comiskey Park I (0-1) | 31-32 | Lost 2 |
| » W: Kevin Hickey (1-2) L: Tom Burgmeier (4-3) S: Salome Barojas (4) | Fourth | 3½ out |
| Saturday, June 18 |
| » Defeated White Sox (29-33), 3-1 | Comiskey Park I (1-1) | 32-32 | |
| » W: Chris Codiroli (5-6) L: Floyd Bannister (2-8) | Fourth | 3½ out |
| Sunday, June 19 |
| » Lost to White Sox (30-33), 1-0 | Comiskey Park I (1-2) | 32-33 | |
| » W: Britt Burns (3-4) L: Tom Underwood (4-4) | Fourth | 3½ out |
| Monday, June 20 |
| » Defeated Royals (31-29), 7-2 | Royals Stadium (1-0) | 33-33 | |
| » W: Bill Krueger (6-5) L: Vida Blue (0-4) | Fourth | 3½ out |
| Tuesday, June 21 |
| » Lost to Royals (32-29), 4-2 | Royals Stadium (1-1) | 33-34 | |
| » W: Paul Splittorff (5-2) L: Steve McCatty (1-2) S: Dan Quisenberry (18) | Fourth | 3½ out |
| Wednesday, June 22 |
| » Lost to Royals (33-29), 7-6 | Royals Stadium (1-2) | 33-35 | Lost 2 |
| » W: Mike Armstrong (3-3) L: Ben Callahan (0-1) | Fifth | 3½ out |
| Friday, June 24 |
| » Lost to Rangers (36-31), 6-5 | Arlington Stadium (0-1) | 33-36 | Lost 3 |
| » W: Mike Smithson (6-5) L: Steve Baker (3-1) | Fifth | 5 out |
| » Lost to Rangers (37-31), 6-2 | Arlington Stadium (0-2) | 33-37 | Lost 4 |
| » W: Charlie Hough (6-6) L: Curt Young (0-1) | Fifth | 5 out |
| » Major-league debuts: Curt Young (Athletics) |
| Saturday, June 25 |
| » Lost to Rangers (38-31), 8-3 | Arlington Stadium (0-3) | 33-38 | Lost 5 |
| » W: Frank Tanana (3-1) L: Bill Krueger (6-6) S: John Butcher (4) | Fifth | 6 out |
| Sunday, June 26 |
| » Lost to Rangers (39-31), 4-1 | Arlington Stadium (0-4) | 33-39 | Lost 6 |
| » W: Danny Darwin (6-6) L: Steve McCatty (1-3) | Fifth | 7 out |
| Monday, June 27 |
| » Defeated Royals (34-32), 7-1 | Oakland-Alameda County Stadium (19-13) | 34-39 | |
| » W: Ben Callahan (1-1) L: Larry Gura (6-9) S: Chris Codiroli (1) | Fourth | 6 out |
| Tuesday, June 28 |
| » Defeated Royals (34-33), 4-3 | Oakland-Alameda County Stadium (20-13) | 35-39 | Won 2 |
| » W: Tom Underwood (5-4) L: Bud Black (3-2) S: Steve Baker (5) | Fifth | 6 out |
| Wednesday, June 29 |
| » Defeated Royals (34-34), 11-6 | Oakland-Alameda County Stadium (21-13) | 36-39 | Won 3 |
| » W: Jeff Jones (1-0) L: Steve Renko (5-6) | Fourth | 5 out |
| Thursday, June 30 |
| » Lost to Royals (35-34), 7-4 | Oakland-Alameda County Stadium (21-14) | 36-40 | |
| » W: Don Hood (1-1) L: Tom Burgmeier (4-4) S: Dan Quisenberry (19) | Fifth | 6 out |
| Friday, July 1 |
| » Lost to Rangers (42-33), 8-5 | Oakland-Alameda County Stadium (21-15) | 36-41 | Lost 2 |
| » W: Danny Darwin (7-6) L: Ben Callahan (1-2) S: Dave Tobik (5) | Fifth | 7 out |
| Saturday, July 2 |
| » Lost to Rangers (43-33), 13-3 | Oakland-Alameda County Stadium (21-16) | 36-42 | Lost 3 |
| » W: Rick Honeycutt (11-4) L: Tom Underwood (5-5) | Fifth | 8 out |
| Sunday, July 3 |
| » Lost to Rangers (44-33), 16-4 | Oakland-Alameda County Stadium (21-17) | 36-43 | Lost 4 |
| » W: Odell Jones (3-3) L: Dave Beard (2-1) | Fifth | 9 out |
| Monday, July 4 |
| » Defeated Rangers (44-34), 4-3 | Oakland-Alameda County Stadium (22-17) | 37-43 | |
| » W: Steve McCatty (2-3) L: Mike Smithson (6-7) S: Tom Underwood (2) | Fifth | 8 out |
| Friday, July 8 |
| » Lost to Tigers (42-35), 3-2 | Tiger Stadium (1-3) | 37-44 | |
| » W: Doug Bair (3-1) L: Steve Baker (3-2) S: Aurelio Lopez (12) | Fifth | 8 out |
| Saturday, July 9 |
| » Defeated Tigers (42-36), 3-1 | Tiger Stadium (2-3) | 38-44 | |
| » W: Steve McCatty (3-3) L: Jack Morris (8-8) S: Tom Underwood (3) | Fifth | 7 out |
| Sunday, July 10 |
| » Lost to Tigers (43-36), 5-3 | Tiger Stadium (2-4) | 38-45 | |
| » W: Howard Bailey (3-2) L: Dave Beard (2-2) | Fourth | 7 out |
| Monday, July 11 |
| » Lost to Orioles (44-36), 7-6 | Memorial Stadium (1-3) | 38-46 | Lost 2 |
| » W: Dennis Martinez (5-11) L: Steve Baker (3-3) S: Dan Morogiello (1) | Fifth | 8 out |
| Tuesday, July 12 |
| » Lost to Orioles (45-36), 3-1 | Memorial Stadium (1-4) | 38-47 | Lost 3 |
| » W: Allan Ramirez (2-0) L: Gorman Heimueller (0-1) S: Tim Stoddard (2) | Fifth | 8 out |
| Wednesday, July 13 |
| » Lost to Orioles (46-36), 6-2 | Memorial Stadium (1-5) | 38-48 | Lost 4 |
| » W: Storm Davis (7-4) L: Tim Conroy (2-2) S: Sammy Stewart (3) | Fifth | 8 out |
| Thursday, July 14 |
| » Lost to Red Sox (42-42), 9-4 | Fenway Park (0-3) | 38-49 | Lost 5 |
| » W: John Tudor (7-5) L: Steve McCatty (3-4) S: Bob Stanley (17) | Fifth | 9 out |
| Friday, July 15 |
| » Lost to Red Sox (43-42), 10-7 | Fenway Park (0-4) | 38-50 | Lost 6 |
| » W: Mark Clear (3-2) L: Tom Burgmeier (4-5) | Fifth | 9 out |
| Saturday, July 16 |
| » Defeated Red Sox (43-43), 12-5 | Fenway Park (1-4) | 39-50 | |
| » W: Keith Atherton (1-0) L: Bob Stanley (5-5) | Fifth | 8 out |
| Sunday, July 17 |
| » Defeated Red Sox (43-44), 13-9 | Fenway Park (2-4) | 40-50 | Won 2 |
| » W: Chris Codiroli (6-6) L: Mark Clear (3-3) | Fifth | 7 out |
| Monday, July 18 |
| » Lost to Tigers (49-38), 4-2 | Oakland-Alameda County Stadium (22-18) | 40-51 | |
| » W: Dan Petry (9-6) L: Tim Conroy (2-3) S: Doug Bair (6) | Fifth | 7½ out |
| Tuesday, July 19 |
| » Lost to Tigers (50-38), 4-3 | Oakland-Alameda County Stadium (22-19) | 40-52 | Lost 2 |
| » W: Jack Morris (10-8) L: Dave Beard (2-3) | Fifth | 7½ out |
| Wednesday, July 20 |
| » Defeated Tigers (50-39), 9-2 | Oakland-Alameda County Stadium (23-19) | 41-52 | |
| » W: Chris Codiroli (7-6) L: Doug Bair (4-2) | Fifth | 7½ out |
| Thursday, July 21 |
| » Defeated Orioles (52-38), 9-7 | Oakland-Alameda County Stadium (24-19) | 42-52 | Won 2 |
| » W: Dave Beard (3-3) L: Dan Morogiello (0-1) S: Tom Burgmeier (4) | Fifth | 6½ out |
| Friday, July 22 |
| » Defeated Orioles (52-39), 4-3 | Oakland-Alameda County Stadium (25-19) | 43-52 | Won 3 |
| » W: Tom Burgmeier (5-5) L: Allan Ramirez (3-1) | Fifth | 6½ out |
| Saturday, July 23 |
| » Lost to Orioles (53-39), 7-3 | Oakland-Alameda County Stadium (25-20) | 43-53 | |
| » W: Storm Davis (9-4) L: Tim Conroy (2-4) | Fifth | 6½ out |
| Sunday, July 24 |
| » Lost to Orioles (54-39), 4-3 | Oakland-Alameda County Stadium (25-21) | 43-54 | Lost 2 |
| » W: Scott McGregor (12-4) L: Steve McCatty (3-5) | Fifth | 6½ out |
| Monday, July 25 |
| » Lost to Red Sox (49-46), 3-0 | Oakland-Alameda County Stadium (25-22) | 43-55 | Lost 3 |
| » W: Bruce Hurst (7-8) L: Chris Codiroli (7-7) | Fifth | 7½ out |
| » Major-league debuts: Donnie Hill (Athletics) |
| Tuesday, July 26 |
| » Defeated Red Sox (49-47), 9-2 | Oakland-Alameda County Stadium (26-22) | 44-55 | |
| » W: Tom Underwood (6-5) L: Bob Stanley (6-6) | Fifth | 7½ out |
| » Lost to Red Sox (50-47), 5-3 | Oakland-Alameda County Stadium (26-23) | 44-56 | |
| » W: Bob Stanley (7-6) L: Tom Burgmeier (5-6) | Fifth | 7½ out |
| Wednesday, July 27 |
| » Defeated Red Sox (50-48), 7-6 | Oakland-Alameda County Stadium (27-23) | 45-56 | |
| » W: Bill Krueger (7-6) L: Mike Brown (6-6) S: Keith Atherton (1) | Fifth | 7½ out |
| Friday, July 29 |
| » Defeated Angels (48-52), 5-2 | Anaheim Stadium (2-2) | 46-56 | Won 2 |
| » W: Tim Conroy (3-4) L: Ken Forsch (9-7) S: Tom Underwood (4) | Fifth | 7½ out |
| Saturday, July 30 |
| » Defeated Angels (48-53), 13-8 | Anaheim Stadium (3-2) | 47-56 | Won 3 |
| » W: Tom Burgmeier (6-6) L: Luis Sanchez (8-5) | Fifth | 7 out |
| » Defeated Angels (48-54), 2-1 | Anaheim Stadium (4-2) | 48-56 | Won 4 |
| » W: Dave Beard (4-3) L: Tommy John (8-8) | Fifth | 7 out |
| Sunday, July 31 |
| » Lost to Angels (49-54), 4-0 | Anaheim Stadium (4-3) | 48-57 | |
| » W: Geoff Zahn (8-5) L: Gorman Heimueller (0-2) | Fifth | 7 out |
| Monday, August 1 |
| » Defeated Mariners (40-65), 4-3 | Kingdome (4-1) | 49-57 | |
| » W: Tom Underwood (7-5) L: Mike Stanton (0-3) S: Dave Beard (5) | Fifth | 7 out |
| Tuesday, August 2 |
| » Lost to Mariners (41-65), 15-12 | Kingdome (4-2) | 49-58 | |
| » W: Roy Thomas (3-0) L: Chris Codiroli (7-8) S: Ed Vande Berg (2) | Fifth | 8 out |
| Wednesday, August 3 |
| » Defeated Mariners (41-66), 6-1 | Kingdome (5-2) | 50-58 | |
| » W: Tim Conroy (4-4) L: Jim Beattie (8-7) | Fifth | 7 out |
| Thursday, August 4 |
| » Lost to Twins (45-64), 4-3 | Hubert H. Humphrey Metrodome (2-2) | 50-59 | |
| » W: Len Whitehouse (6-1) L: Tom Burgmeier (6-7) | Fifth | 8 out |
| Friday, August 5 |
| » Defeated Twins (45-65), 3-2 | Hubert H. Humphrey Metrodome (3-2) | 51-59 | |
| » W: Gorman Heimueller (1-2) L: Jack O'Connor (1-3) S: Dave Beard (6) | Fifth | 7 out |
| Saturday, August 6 |
| » Defeated Twins (45-66), 6-4 | Hubert H. Humphrey Metrodome (4-2) | 52-59 | Won 2 |
| » W: Keith Atherton (2-0) L: Ron Davis (3-6) | Fifth | 7 out |
| Sunday, August 7 |
| » Defeated Twins (45-67), 6-0 | Hubert H. Humphrey Metrodome (5-2) | 53-59 | Won 3 |
| » W: Chris Codiroli (8-8) L: Frank Viola (5-9) S: Keith Atherton (2) | Fifth | 7 out |
| Monday, August 8 |
| » Defeated Mariners (44-68), 2-1 | Oakland-Alameda County Stadium (28-23) | 54-59 | Won 4 |
| » W: Tim Conroy (5-4) L: Jim Beattie (8-8) S: Dave Beard (7) | Fourth | 6½ out |
| Tuesday, August 9 |
| » Defeated Mariners (44-69), 7-6 | Oakland-Alameda County Stadium (29-23) | 55-59 | Won 5 |
| » W: Tom Underwood (8-5) L: Bob Stoddard (6-11) S: Dave Beard (8) | Fourth | 6½ out |
| Wednesday, August 10 |
| » Lost to Mariners (45-69), 7-5 | Oakland-Alameda County Stadium (29-24) | 55-60 | |
| » W: Matt Young (9-11) L: Gorman Heimueller (1-3) S: Ed Vande Berg (4) | Fourth | 7 out |
| Thursday, August 11 |
| » Defeated Twins (47-69), 6-0 | Oakland-Alameda County Stadium (30-24) | 56-60 | |
| » W: Chris Codiroli (9-8) L: Frank Viola (5-10) | Third | 7 out |
| Friday, August 12 |
| » Lost to Twins (48-69), 5-3 | Oakland-Alameda County Stadium (30-25) | 56-61 | |
| » W: Ken Schrom (10-4) L: Tom Underwood (8-6) S: Ron Davis (20) | Fourth | 8 out |
| » Major-league debuts: Mark Smith (Athletics) |
| Saturday, August 13 |
| » Lost to Twins (49-69), 7-3 | Oakland-Alameda County Stadium (30-26) | 56-62 | Lost 2 |
| » W: Albert Williams (7-11) L: Tim Conroy (5-5) | Fourth | 8 out |
| Sunday, August 14 |
| » Defeated Twins (49-70), 6-0 | Oakland-Alameda County Stadium (31-26) | 57-62 | |
| » W: Steve McCatty (4-5) L: Bobby Castillo (8-10) | Fifth | 7 out |
| Monday, August 15 |
| » Defeated Angels (56-62), 5-0 | Oakland-Alameda County Stadium (32-26) | 58-62 | Won 2 |
| » W: Gorman Heimueller (2-3) L: Geoff Zahn (8-8) | Fourth | 7 out |
| Tuesday, August 16 |
| » Defeated Angels (56-63), 4-0 | Oakland-Alameda County Stadium (33-26) | 59-62 | Won 3 |
| » W: Chris Codiroli (10-8) L: Rick Steirer (1-1) S: Dave Beard (9) | Third | 7 out |
| Wednesday, August 17 |
| » Lost to Angels (57-63), 6-5 | Oakland-Alameda County Stadium (33-27) | 59-63 | |
| » W: Mike Witt (6-9) L: Mike Warren (0-2) S: John Curtis (3) | Third | 8 out |
| Friday, August 19 |
| » Defeated Brewers (68-52), 9-1 | County Stadium (2-2) | 60-63 | |
| » W: Tim Conroy (6-5) L: Don Sutton (7-10) | Third | 8½ out |
| Saturday, August 20 |
| » Lost to Brewers (69-52), 3-1 | County Stadium (2-3) | 60-64 | |
| » W: Tom Tellmann (9-3) L: Steve McCatty (4-6) S: Pete Ladd (15) | Third | 8½ out |
| Sunday, August 21 |
| » Lost to Brewers (70-52), 7-1 | County Stadium (2-4) | 60-65 | Lost 2 |
| » W: Moose Haas (12-2) L: Chris Codiroli (10-9) S: Jim Slaton (5) | Third | 9½ out |
| Monday, August 22 |
| » Defeated Yankees (67-55), 3-2 | Yankee Stadium (1-4) | 61-65 | |
| » W: Dave Beard (5-3) L: George Frazier (3-3) | Third | 9½ out |
| Tuesday, August 23 |
| » Defeated Yankees (67-56), 9-3 | Yankee Stadium (2-4) | 62-65 | Won 2 |
| » W: Mike Warren (1-2) L: Matt Keough (4-7) | Third | 8½ out |
| Wednesday, August 24 |
| » Lost to Indians (53-73), 1-0 | Cleveland Stadium (3-1) | 62-66 | |
| » W: Neal Heaton (9-4) L: Tim Conroy (6-6) | Third | 10 out |
| » Lost to Indians (54-73), 4-2 | Cleveland Stadium (3-2) | 62-67 | Lost 2 |
| » W: Lary Sorensen (7-9) L: Keith Atherton (2-1) S: Jamie Easterly (3) | Third | 10 out |
| Thursday, August 25 |
| » Defeated Indians (54-74), 6-0 | Cleveland Stadium (4-2) | 63-67 | |
| » W: Steve McCatty (5-6) L: Mike Jeffcoat (0-2) | Third | 9 out |
| Friday, August 26 |
| » Defeated Brewers (73-54), 4-3 | Oakland-Alameda County Stadium (34-27) | 64-67 | Won 2 |
| » W: Chris Codiroli (11-9) L: Moose Haas (12-3) S: Dave Beard (10) | Third | 8 out |
| Saturday, August 27 |
| » Defeated Brewers (73-55), 5-2 | Oakland-Alameda County Stadium (35-27) | 65-67 | Won 3 |
| » W: Gorman Heimueller (3-3) L: Chuck Porter (6-6) | Third | 8 out |
| Sunday, August 28 |
| » Lost to Brewers (74-55), 4-2 | Oakland-Alameda County Stadium (35-28) | 65-68 | |
| » W: Mike Caldwell (10-9) L: Mike Warren (1-3) S: Jerry Augustine (2) | Third | 9 out |
| Tuesday, August 30 |
| » Lost to Yankees (72-57), 8-5 | Oakland-Alameda County Stadium (35-29) | 65-69 | Lost 2 |
| » W: Ron Guidry (16-8) L: Dave Beard (5-4) | Third | 10½ out |
| Wednesday, August 31 |
| » Lost to Yankees (73-57), 6-4 | Oakland-Alameda County Stadium (35-30) | 65-70 | Lost 3 |
| » W: Shane Rawley (14-10) L: Tim Conroy (6-7) S: Rich Gossage (15) | Third | 11½ out |
| Thursday, September 1 |
| » Defeated Yankees (73-58), 2-0 | Oakland-Alameda County Stadium (36-30) | 66-70 | |
| » W: Chris Codiroli (12-9) L: Dave Righetti (14-5) | Third | 11½ out |
| Friday, September 2 |
| » Lost to Indians (59-76), 4-2 | Oakland-Alameda County Stadium (36-31) | 66-71 | |
| » W: Lary Sorensen (9-9) L: Gorman Heimueller (3-4) S: Bud Anderson (6) | Second | 11½ out |
| Saturday, September 3 |
| » Lost to Indians (60-76), 13-6 | Oakland-Alameda County Stadium (36-32) | 66-72 | Lost 2 |
| » W: Dan Spillner (2-9) L: Dave Beard (5-5) | Third | 12½ out |
| » Major-league debuts: Bert Bradley (Athletics) |
| Sunday, September 4 |
| » Lost to Indians (61-76), 9-2 | Oakland-Alameda County Stadium (36-33) | 66-73 | Lost 3 |
| » W: Rick Sutcliffe (16-9) L: Steve McCatty (5-7) | Third | 12½ out |
| Monday, September 5 |
| » Lost to White Sox (78-59), 11-1 | Comiskey Park I (1-3) | 66-74 | Lost 4 |
| » W: Floyd Bannister (14-10) L: Tim Conroy (6-8) | Third | 13½ out |
| Tuesday, September 6 |
| » Lost to White Sox (79-59), 7-6 | Comiskey Park I (1-4) | 66-75 | Lost 5 |
| » W: La Marr Hoyt (19-10) L: Chris Codiroli (12-10) S: Dennis Lamp (12) | Third | 14½ out |
| Wednesday, September 7 |
| » Lost to White Sox (80-59), 8-7 | Comiskey Park I (1-5) | 66-76 | Lost 6 |
| » W: Juan Agosto (2-2) L: Keith Atherton (2-2) | Fourth | 15½ out |
| Friday, September 9 |
| » Defeated Blue Jays (77-66), 7-5 | Exhibition Stadium (2-2) | 67-76 | |
| » W: Steve McCatty (6-7) L: Jim Clancy (14-9) S: Keith Atherton (3) | Third | 16 out |
| Saturday, September 10 |
| » Lost to Blue Jays (78-66), 7-5 | Exhibition Stadium (2-3) | 67-77 | |
| » W: Dave Stieb (15-11) L: Tom Underwood (8-7) S: Randy Moffitt (10) | Third | 17 out |
| Sunday, September 11 |
| » Lost to Blue Jays (79-66), 16-6 | Exhibition Stadium (2-4) | 67-78 | Lost 2 |
| » W: Jim Gott (9-13) L: Chris Codiroli (12-11) | Fourth | 18 out |
| Tuesday, September 13 |
| » Defeated Rangers (67-78), 6-5 | Oakland-Alameda County Stadium (37-33) | 68-78 | |
| » W: Mike Warren (2-3) L: Frank Tanana (7-8) S: Keith Atherton (4) | Third | 18 out |
| Wednesday, September 14 |
| » Lost to Rangers (68-78), 4-2 | Oakland-Alameda County Stadium (37-34) | 68-79 | |
| » W: Charlie Hough (14-12) L: Steve McCatty (6-8) S: Dave Tobik (7) | Fourth | 18 out |
| Thursday, September 15 |
| » Lost to Rangers (69-78), 6-5 | Oakland-Alameda County Stadium (37-35) | 68-80 | Lost 2 |
| » W: Dave Schmidt (3-3) L: Tim Conroy (6-9) S: Dave Tobik (8) | Fourth | 19 out |
| Friday, September 16 |
| » Lost to Royals (70-75), 6-5 | Royals Stadium (1-3) | 68-81 | Lost 3 |
| » W: Larry Gura (11-17) L: Keith Atherton (2-3) S: Dan Quisenberry (40) | Fourth | 20 out |
| Saturday, September 17 |
| » Lost to Royals (71-75), 10-1 | Royals Stadium (1-4) | 68-82 | Lost 4 |
| » W: Eric Rasmussen (3-5) L: Gorman Heimueller (3-5) S: Dan Quisenberry (41) | Fourth | 21 out |
| Sunday, September 18 |
| » Defeated Royals (71-76), 6-2 | Royals Stadium (2-4) | 69-82 | |
| » W: Mike Warren (3-3) L: Frank Wills (0-1) | Fourth | 21 out |
| Tuesday, September 20 |
| » Lost to Rangers (72-79), 3-2 | |