| Thursday, April 9 |
| » Lost to Angels (1-0), 6-2 | Kingdome (0-1) | 0-1 | |
| » W: Geoff Zahn (1-0) L: Glenn Abbott (0-1) | Third | 1 out |
| » Major-league debuts: Dave Henderson (Mariners) Tom Brunansky (Angels) |
| Friday, April 10 |
| » Defeated Angels (1-1), 10-2 | Kingdome (1-1) | 1-1 | |
| » W: Jerry Don Gleaton (1-0) L: Jesse Jefferson (0-1) | Third | 1 out |
| » Major-league debuts: Luis Sanchez (Angels) |
| Saturday, April 11 |
| » Lost to Angels (2-1), 7-4 | Kingdome (1-2) | 1-2 | |
| » W: Don Aase (1-0) L: Floyd Bannister (0-1) S: Luis Sanchez (1) | Fourth | 2 out |
| » Major-league debuts: Bryan Clark (Mariners) Mike Witt (Angels) |
| Sunday, April 12 |
| » Lost to Angels (3-1), 8-6 | Kingdome (1-3) | 1-3 | Lost 2 |
| » W: Andy Hassler (1-0) L: Larry Andersen (0-1) | Fifth | 3 out |
| Tuesday, April 14 |
| » Lost to Twins (1-4), 5-4 | Kingdome (1-4) | 1-4 | Lost 3 |
| » W: Jerry Koosman (1-1) L: Glenn Abbott (0-2) S: Doug Corbett (1) | Sixth | 4½ out |
| » Major-league debuts: Dave Engle (Twins) |
| Wednesday, April 15 |
| » Defeated Twins (1-5), 6-5 | Kingdome (2-4) | 2-4 | |
| » W: Jerry Don Gleaton (2-0) L: Fernando Arroyo (0-1) S: Bryan Clark (1) | Fifth | 4½ out |
| Friday, April 17 |
| » Lost to Athletics (9-0), 16-1 | Oakland-Alameda County Stadium (0-1) | 2-5 | |
| » W: Steve McCatty (2-0) L: Floyd Bannister (0-2) | Fifth | 6 out |
| Saturday, April 18 |
| » Lost to Athletics (10-0), 8-0 | Oakland-Alameda County Stadium (0-2) | 2-6 | Lost 2 |
| » W: Brian Kingman (1-0) L: Ken Clay (0-1) | Fifth | 7 out |
| Sunday, April 19 |
| » Lost to Athletics (11-0), 6-1 | Oakland-Alameda County Stadium (0-3) | 2-7 | Lost 3 |
| » W: Mike Norris (3-0) L: Glenn Abbott (0-3) | Sixth | 7 out |
| » Defeated Athletics (11-1), 3-2 | Oakland-Alameda County Stadium (1-3) | 3-7 | |
| » W: Bryan Clark (1-0) L: Rick Langford (2-1) S: Dick Drago (1) | Sixth | 7 out |
| Monday, April 20 |
| » Lost to Angels (5-6), 6-1 | Anaheim Stadium (0-1) | 3-8 | |
| » W: Geoff Zahn (2-1) L: Jerry Don Gleaton (2-1) | Sixth | 8 out |
| Tuesday, April 21 |
| » Defeated Angels (5-7), 3-0 | Anaheim Stadium (1-1) | 4-8 | |
| » W: Floyd Bannister (1-2) L: Jesse Jefferson (0-2) | Fifth | 8 out |
| Wednesday, April 22 |
| » Lost to Angels (6-7), 7-3 | Anaheim Stadium (1-2) | 4-9 | |
| » W: Ken Forsch (2-0) L: Ken Clay (0-2) | Fifth | 9 out |
| Friday, April 24 |
| » Lost to Athletics (15-1), 6-2 | Kingdome (2-5) | 4-10 | Lost 2 |
| » W: Mike Norris (4-0) L: Glenn Abbott (0-4) | Fifth | 10 out |
| Saturday, April 25 |
| » Lost to Athletics (16-1), 7-4 | Kingdome (2-6) | 4-11 | Lost 3 |
| » W: Rick Langford (3-1) L: Jerry Don Gleaton (2-2) | Sixth | 11 out |
| Sunday, April 26 |
| » Lost to Athletics (17-1), 9-4 | Kingdome (2-7) | 4-12 | Lost 4 |
| » W: Matt Keough (4-0) L: Mike Parrott (0-1) | Seventh | 12 out |
| Monday, April 27 |
| » Defeated Twins (4-12), 8-3 | Metropolitan Stadium (1-0) | 5-12 | |
| » W: Larry Andersen (1-1) L: Don Cooper (0-1) | Fifth | 11 out |
| Tuesday, April 28 |
| » Lost to Twins (5-12), 4-1 | Metropolitan Stadium (1-1) | 5-13 | |
| » W: Pete Redfern (2-1) L: Ken Clay (0-3) | Sixth | 11 out |
| Wednesday, April 29 |
| » Tied Twins, 7-7 | Metropolitan Stadium (1-1) | 5-13 | |
| » Starters: Glenn Abbott vs Jerry Koosman | Sixth | 11½ out |
| Thursday, April 30 |
| » Lost to Tigers (8-11), 2-0 | Kingdome (2-8) | 5-14 | Lost 2 |
| » W: Dave Rozema (2-2) L: Jerry Don Gleaton (2-3) | Sixth | 12 out |
| » Major-league debuts: Rick Leach (Tigers) |
| Friday, May 1 |
| » Lost to Tigers (9-11), 7-3 | Kingdome (2-9) | 5-15 | Lost 3 |
| » W: Milt Wilcox (3-2) L: Mike Parrott (0-2) S: Kevin Saucier (2) | Seventh | 13 out |
| Saturday, May 2 |
| » Defeated Tigers (9-12), 3-1 | Kingdome (3-9) | 6-15 | |
| » W: Floyd Bannister (2-2) L: Dan Petry (0-1) S: Dick Drago (2) | Seventh | 13 out |
| Sunday, May 3 |
| » Lost to Tigers (10-12), 8-5 | Kingdome (3-10) | 6-16 | |
| » W: Jack Morris (2-3) L: Larry Andersen (1-2) | Seventh | 12½ out |
| Monday, May 4 |
| » Lost to Brewers (12-8), 9-5 | Kingdome (3-11) | 6-17 | Lost 2 |
| » W: Jamie Easterly (1-1) L: Brian Allard (0-1) S: Rollie Fingers (3) | Seventh | 13 out |
| Tuesday, May 5 |
| » Lost to Brewers (13-8), 4-1 | Kingdome (3-12) | 6-18 | Lost 3 |
| » W: Pete Vuckovich (1-2) L: Jerry Don Gleaton (2-4) S: Rollie Fingers (4) | Sixth | 14 out |
| Wednesday, May 6 |
| » Defeated Brewers (13-9), 12-1 | Kingdome (4-12) | 7-18 | |
| » Manager: Rene Lachemann |
| » W: Mike Parrott (1-2) L: Randy Lerch (2-2) | Seventh | 13 out |
| Thursday, May 7 |
| » Defeated Brewers (13-10), 4-1 | Kingdome (5-12) | 8-18 | Won 2 |
| » W: Floyd Bannister (3-2) L: Moose Haas (2-1) | Seventh | 13 out |
| Friday, May 8 |
| » Defeated Yankees (15-11), 3-2 | Kingdome (6-12) | 9-18 | Won 3 |
| » W: Bryan Clark (2-0) L: Rudy May (4-2) | Sixth | 13 out |
| Saturday, May 9 |
| » Defeated Yankees (15-12), 6-5 | Kingdome (7-12) | 10-18 | Won 4 |
| » W: Dick Drago (1-0) L: Ron Davis (1-1) | Fifth | 13 out |
| Sunday, May 10 |
| » Lost to Yankees (16-12), 5-2 | Kingdome (7-13) | 10-19 | |
| » W: Tom Underwood (1-4) L: Jerry Don Gleaton (2-5) S: Rich Gossage (8) | Sixth | 13 out |
| Tuesday, May 12 |
| » Lost to Tigers (13-16), 6-2 | Tiger Stadium (0-1) | 10-20 | Lost 2 |
| » W: Milt Wilcox (5-2) L: Floyd Bannister (3-3) | Sixth | 13 out |
| Wednesday, May 13 |
| » Lost to Tigers (14-16), 1-0 | Tiger Stadium (0-2) | 10-21 | Lost 3 |
| » W: Dan Petry (1-2) L: Dick Drago (1-1) | Sixth | 14 out |
| Saturday, May 16 |
| » Lost to Yankees (19-13), 7-5 | Yankee Stadium (0-1) | 10-22 | Lost 4 |
| » W: Doug Bird (2-0) L: Jerry Don Gleaton (2-6) S: Rich Gossage (10) | Sixth | 13 out |
| Sunday, May 17 |
| » Defeated Yankees (19-14), 1-0 | Yankee Stadium (1-1) | 11-22 | |
| » W: Floyd Bannister (4-3) L: Ron Davis (1-2) S: Shane Rawley (1) | Sixth | 12 out |
| Monday, May 18 |
| » Lost to Red Sox (17-16), 8-5 | Fenway Park (0-1) | 11-23 | |
| » W: Mark Clear (4-0) L: Dick Drago (1-2) S: Bill Campbell (1) | Sixth | 12 out |
| Tuesday, May 19 |
| » Lost to Red Sox (18-16), 4-0 | Fenway Park (0-2) | 11-24 | Lost 2 |
| » W: Frank Tanana (1-4) L: Mike Parrott (1-3) | Sixth | 12 out |
| Wednesday, May 20 |
| » Defeated Indians (19-11), 3-1 | Cleveland Stadium (1-0) | 12-24 | |
| » W: Brian Allard (1-1) L: Len Barker (3-2) S: Shane Rawley (2) | Fifth | 11 out |
| Thursday, May 21 |
| » Defeated Indians (19-12), 6-3 | Cleveland Stadium (2-0) | 13-24 | Won 2 |
| » W: Glenn Abbott (1-4) L: Wayne Garland (2-4) S: Larry Andersen (1) | Fifth | 10 out |
| Friday, May 22 |
| » Lost to Rangers (20-16), 6-2 | Kingdome (7-14) | 13-25 | |
| » W: Danny Darwin (5-3) L: Floyd Bannister (4-4) | Fifth | 11 out |
| Saturday, May 23 |
| » Lost to Rangers (21-16), 6-4 | Kingdome (7-15) | 13-26 | Lost 2 |
| » W: Steve Comer (3-1) L: Shane Rawley (0-1) S: John Henry Johnson (1) | Fifth | 12 out |
| Sunday, May 24 |
| » Lost to Rangers (22-16), 5-3 | Kingdome (7-16) | 13-27 | Lost 3 |
| » W: Jon Matlack (3-3) L: Ken Clay (0-4) S: John Henry Johnson (2) | Sixth | 13½ out |
| Monday, May 25 |
| » Defeated Royals (11-23), 7-1 | Kingdome (8-16) | 14-27 | |
| » W: Brian Allard (2-1) L: Larry Gura (4-4) | Fifth | 13 out |
| » Defeated Royals (11-24), 5-2 | Kingdome (9-16) | 15-27 | Won 2 |
| » W: Jerry Don Gleaton (3-6) L: Juan Berenguer (0-3) S: Shane Rawley (3) | Fifth | 13 out |
| Tuesday, May 26 |
| » Lost to Royals (12-24), 5-4 | Kingdome (9-17) | 15-28 | |
| » W: Dennis Leonard (5-5) L: Shane Rawley (0-2) S: Dan Quisenberry (4) | Fifth | 13 out |
| Wednesday, May 27 |
| » Lost to Royals (13-24), 8-5 | Kingdome (9-18) | 15-29 | Lost 2 |
| » W: Paul Splittorff (1-4) L: Floyd Bannister (4-5) S: Dan Quisenberry (5) | Sixth | 13 out |
| Friday, May 29 |
| » Defeated Rangers (25-18), 5-4 | Arlington Stadium (1-0) | 16-29 | |
| » W: Dick Drago (2-2) L: Bob Babcock (1-1) S: Bob Galasso (1) | Sixth | 12 out |
| Saturday, May 30 |
| » Lost to Rangers (26-18), 6-0 | Arlington Stadium (1-1) | 16-30 | |
| » W: Doc Medich (4-3) L: Mike Parrott (1-4) | Sixth | 11½ out |
| Sunday, May 31 |
| » Defeated Rangers (26-19), 5-3 | Arlington Stadium (2-1) | 17-30 | |
| » W: Brian Allard (3-1) L: Fergie Jenkins (3-4) S: Shane Rawley (4) | Sixth | 12 out |
| » Major-league debuts: Casey Parsons (Mariners) |
| Monday, June 1 |
| » Lost to Royals (16-25), 3-2 | Royals Stadium (0-1) | 17-31 | |
| » W: Paul Splittorff (2-4) L: Larry Andersen (1-3) S: Dan Quisenberry (8) | Sixth | 12½ out |
| Tuesday, June 2 |
| » Defeated Royals (16-26), 4-3 | Royals Stadium (1-1) | 18-31 | |
| » W: Floyd Bannister (5-5) L: Juan Berenguer (0-4) S: Dick Drago (3) | Sixth | 12½ out |
| Wednesday, June 3 |
| » Lost to Royals (17-26), 12-9 | Royals Stadium (1-2) | 18-32 | |
| » W: Rich Gale (4-3) L: Bryan Clark (2-1) S: Ken Brett (1) | Sixth | 13½ out |
| Friday, June 5 |
| » Lost to Indians (25-20), 8-1 | Kingdome (9-19) | 18-33 | Lost 2 |
| » W: Len Barker (5-2) L: Mike Parrott (1-5) | Sixth | 13 out |
| Saturday, June 6 |
| » Lost to Indians (26-20), 5-3 | Kingdome (9-20) | 18-34 | Lost 3 |
| » W: Bert Blyleven (7-3) L: Shane Rawley (0-3) S: Mike Stanton (1) | Sixth | 14 out |
| Sunday, June 7 |
| » Defeated Indians (26-21), 5-4 | Kingdome (10-20) | 19-34 | |
| » W: Dick Drago (3-2) L: Mike Stanton (1-1) | Sixth | 14 out |
| Monday, June 8 |
| » Defeated Red Sox (28-25), 2-0 | Kingdome (11-20) | 20-34 | Won 2 |
| » W: Floyd Bannister (6-5) L: John Tudor (2-3) | Sixth | 13 out |
| Tuesday, June 9 |
| » Lost to Red Sox (29-25), 10-1 | Kingdome (11-21) | 20-35 | |
| » W: Mike Torrez (6-2) L: Bryan Clark (2-2) | Sixth | 15 out |
| Wednesday, June 10 |
| » Lost to Red Sox (30-25), 4-2 | Kingdome (11-22) | 20-36 | Lost 2 |
| » W: Frank Tanana (3-4) L: Brian Allard (3-2) S: Bill Campbell (3) | Sixth | 15 out |
| Thursday, June 11 |
| » Defeated Orioles (31-23), 8-2 | Kingdome (12-22) | 21-36 | |
| » W: Mike Parrott (2-5) L: Dennis Martinez (7-3) | Sixth | 14½ out |
| Monday, June 15 |
| Future Mariner Jeremy Reed is born in San Dimas, CA. |
| Monday, August 10 |
| » Defeated Angels (31-30), 5-4 | Kingdome (13-22) | 22-36 | Won 2 |
| » W: Dick Drago (4-2) L: Don Aase (1-2) | Sixth | 13½ out |
| Tuesday, August 11 |
| » Defeated Angels (31-31), 4-1 | Kingdome (14-22) | 23-36 | Won 3 |
| » W: Jim Beattie (1-0) L: Ken Forsch (9-4) S: Larry Andersen (2) | Sixth | 13½ out |
| Wednesday, August 12 |
| » Lost to Angels (32-31), 4-1 | Kingdome (14-23) | 23-37 | |
| » W: Don Aase (2-2) L: Dick Drago (4-3) | Sixth | 13½ out |
| Thursday, August 13 |
| » Defeated Twins (19-41), 11-1 | Metropolitan Stadium (2-1) | 24-37 | |
| » W: Mike Parrott (3-5) L: Fernando Arroyo (4-5) S: Larry Andersen (3) | Fifth | 13 out |
| Friday, August 14 |
| » Lost to Twins (20-41), 6-1 | Metropolitan Stadium (2-2) | 24-38 | |
| » W: Albert Williams (2-5) L: Bob Galasso (0-1) S: Jerry Koosman (2) | Sixth | 13½ out |
| » Defeated Twins (20-42), 13-3 | Metropolitan Stadium (3-2) | 25-38 | |
| » W: Jerry Don Gleaton (4-6) L: Roger Erickson (3-7) | Sixth | 13½ out |
| Saturday, August 15 |
| » Defeated Twins (20-43), 6-0 | Metropolitan Stadium (4-2) | 26-38 | Won 2 |
| » W: Glenn Abbott (2-4) L: Brad Havens (0-3) S: Bryan Clark (2) | Sixth | 13½ out |
| Sunday, August 16 |
| » Defeated Twins (20-44), 7-4 | Metropolitan Stadium (5-2) | 27-38 | Won 3 |
| » W: Shane Rawley (1-3) L: Doug Corbett (2-3) | Fifth | 13½ out |
| Tuesday, August 18 |
| » Lost to Indians (29-31), 5-2 | Kingdome (14-24) | 27-39 | |
| » W: Bert Blyleven (8-5) L: Bryan Clark (2-3) S: Dan Spillner (3) | Sixth | 14½ out |
| Wednesday, August 19 |
| » Defeated Indians (29-32), 4-3 | Kingdome (15-24) | 28-39 | |
| » W: Shane Rawley (2-3) L: Sid Monge (1-3) | Fifth | 14½ out |
| Thursday, August 20 |
| » Lost to Indians (30-32), 6-5 | Kingdome (15-25) | 28-40 | |
| » W: Mike Stanton (3-2) L: Dick Drago (4-4) | Fifth | 14½ out |
| Friday, August 21 |
| » Lost to Red Sox (35-32), 7-4 | Kingdome (15-26) | 28-41 | Lost 2 |
| » W: Bob Stanley (6-4) L: Randy Stein (0-1) | Sixth | 14½ out |
| Saturday, August 22 |
| » Lost to Red Sox (36-32), 5-3 | Kingdome (15-27) | 28-42 | Lost 3 |
| » W: Bob Ojeda (2-1) L: Jim Beattie (1-1) S: Mark Clear (5) | Sixth | 15½ out |
| Sunday, August 23 |
| » Lost to Red Sox (37-32), 7-5 | Kingdome (15-28) | 28-43 | Lost 4 |
| » W: Tom Burgmeier (3-4) L: Bryan Clark (2-4) S: Bill Campbell (5) | Sixth | 15½ out |
| Monday, August 24 |
| » Lost to Orioles (39-29), 12-8 | Kingdome (15-29) | 28-44 | Lost 5 |
| » W: Dennis Martinez (9-4) L: Jerry Don Gleaton (4-7) | Sixth | 16½ out |
| Tuesday, August 25 |
| » Lost to Orioles (40-29), 6-5 | Kingdome (15-30) | 28-45 | Lost 6 |
| » W: Tim Stoddard (2-1) L: Dick Drago (4-5) S: Jeff Schneider (1) | Sixth | 16½ out |
| Thursday, August 27 |
| » Lost to Indians (33-35), 12-2 | Cleveland Stadium (2-1) | 28-46 | Lost 7 |
| » W: Bert Blyleven (9-5) L: Mike Parrott (3-6) | Sixth | 16½ out |
| Friday, August 28 |
| » Lost to Indians (34-35), 1-0 | Cleveland Stadium (2-2) | 28-47 | Lost 8 |
| » W: John Denny (5-4) L: Shane Rawley (2-4) | Sixth | 16½ out |
| Saturday, August 29 |
| » Lost to Indians (35-35), 7-3 | Cleveland Stadium (2-3) | 28-48 | Lost 9 |
| » W: Rick Waits (6-7) L: Floyd Bannister (6-6) | Sixth | 16½ out |
| Sunday, August 30 |
| » Lost to Indians (36-35), 17-11 | Cleveland Stadium (2-4) | 28-49 | Lost 10 |
| » W: Sid Monge (2-4) L: Shane Rawley (2-5) | Sixth | 17½ out |
| Monday, August 31 |
| » Defeated Orioles (42-32), 4-3 | Memorial Stadium (1-0) | 29-49 | |
| » W: Larry Andersen (2-3) L: Sammy Stewart (3-5) | Sixth | 17½ out |
| Tuesday, September 1 |
| » Lost to Orioles (43-32), 1-0 | Memorial Stadium (1-1) | 29-50 | |
| » W: Steve Stone (3-4) L: Glenn Abbott (2-5) S: Tippy Martinez (10) | Sixth | 18 out |
| Wednesday, September 2 |
| » Lost to Orioles (44-32), 3-2 | Memorial Stadium (1-2) | 29-51 | Lost 2 |
| » W: Tim Stoddard (3-1) L: Shane Rawley (2-6) | Sixth | 17½ out |
| Thursday, September 3 |
| » Game at Fenway Park interrupted in the 20th inning with the score of Mariners 3, Red Sox 3. Completed on September 04. |
| Friday, September 4 |
| » Defeated Red Sox (42-37), 5-2 | Fenway Park (1-2) | 30-51 | |
| » W: Bob Stoddard (1-0) L: Frank Tanana (3-8) S: Mike Parrott (1) | Sixth | 17½ out |
| » Defeated Red Sox (42-38), 8-7 | Fenway Park (2-2) | 31-51 | Won 2 |
| » W: Bob Galasso (1-1) L: Bob Stanley (7-6) S: Jim Beattie (1) | Sixth | 17½ out |
| » Major-league debuts: Bob Stoddard (Mariners) |
| Saturday, September 5 |
| » Lost to Red Sox (43-38), 12-5 | Fenway Park (2-3) | 31-52 | |
| » W: John Tudor (3-3) L: Ken Clay (0-5) | Sixth | 17½ out |
| » Major-league debuts: Bud Black (Mariners) |
| Sunday, September 6 |
| » Lost to Red Sox (44-38), 6-1 | Fenway Park (2-4) | 31-53 | Lost 2 |
| » W: Bruce Hurst (1-0) L: Glenn Abbott (2-6) S: Mark Clear (7) | Sixth | 17½ out |
| Monday, September 7 |
| » Defeated White Sox (42-38), 9-5 | Comiskey Park I (1-0) | 32-53 | |
| » W: Jim Beattie (2-1) L: Richard Dotson (8-6) S: Larry Andersen (4) | Sixth | 17½ out |
| » Major-league debuts: Juan Agosto (White Sox) |
| Tuesday, September 8 |
| » Lost to White Sox (43-38), 5-3 | Comiskey Park I (1-1) | 32-54 | |
| » W: Steve Trout (8-5) L: Floyd Bannister (6-7) S: La Marr Hoyt (8) | Sixth | 18½ out |
| Wednesday, September 9 |
| » Defeated White Sox (43-39), 3-1 | Comiskey Park I (2-1) | 33-54 | |
| » W: Bob Stoddard (2-0) L: Dennis Lamp (5-4) S: Larry Andersen (5) | Sixth | 17½ out |
| Thursday, September 10 |
| » Lost to Blue Jays (30-57), 2-0 | Exhibition Stadium (0-1) | 33-55 | |
| » W: Luis Leal (6-10) L: Ken Clay (0-6) S: Joey McLaughlin (6) | Sixth | 18 out |
| Friday, September 11 |
| » Defeated Blue Jays (30-58), 8-1 | Exhibition Stadium (1-1) | 34-55 | |
| » W: Glenn Abbott (3-6) L: Juan Berenguer (2-9) | Sixth | 18 out |
| Saturday, September 12 |
| » Lost to Blue Jays (31-58), 3-0 | Exhibition Stadium (1-2) | 34-56 | |
| » W: Dave Stieb (9-10) L: Jim Beattie (2-2) | Sixth | 18 out |
| Sunday, September 13 |
| » Major-league debuts: Daryl Sconiers (Angels) |
| Monday, September 14 |
| » Lost to White Sox (45-42), 5-2 | Kingdome (15-31) | 34-57 | Lost 2 |
| » W: Dennis Lamp (6-4) L: Floyd Bannister (6-8) | Sixth | 18½ out |
| Tuesday, September 15 |
| » Defeated White Sox (45-43), 8-4 | Kingdome (16-31) | 35-57 | |
| » W: Larry Andersen (3-3) L: Jerry Koosman (3-12) S: Dick Drago (4) | Sixth | 17½ out |
| Wednesday, September 16 |
| » Lost to White Sox (46-43), 3-1 | Kingdome (16-32) | 35-58 | |
| » W: Britt Burns (9-4) L: Dick Drago (4-6) | Sixth | 18½ out |
| Friday, September 18 |
| » Lost to Royals (42-45), 8-3 | Kingdome (16-33) | 35-59 | Lost 2 |
| » W: Mike Jones (5-1) L: Glenn Abbott (3-7) S: Dan Quisenberry (17) | Seventh | 19½ out |
| Saturday, September 19 |
| » Defeated Royals (42-46), 4-1 | Kingdome (17-33) | 36-59 | |
| » W: Jim Beattie (3-2) L: Jim Wright (1-2) S: Shane Rawley (5) | Sixth | 19½ out |
| Sunday, September 20 |
| » Defeated Royals (42-47), 3-2 | Kingdome (18-33) | 37-59 | Won 2 |
| » W: Floyd Bannister (7-8) L: Dennis Leonard (10-11) | Sixth | 18½ out |
| » Major-league debuts: Tim Ireland (Royals) |
| Monday, September 21 |
| » Lost to Rangers (51-42), 4-1 | Arlington Stadium (2-2) | 37-60 | |
| » W: Danny Darwin (9-8) L: Bob Stoddard (2-1) | Sixth | 19 out |
| Tuesday, September 22 |
| » Defeated Rangers (51-43), 3-2 | Arlington Stadium (3-2) | 38-60 | |
| » W: Ken Clay (1-6) L: John Butcher (0-1) S: Shane Rawley (6) | Sixth | 19½ out |
| Wednesday, September 23 |
| » Defeated Rangers (51-44), 2-1 | Arlington Stadium (4-2) | 39-60 | Won 2 |
| » W: Glenn Abbott (4-7) L: Rick Honeycutt (10-6) S: Shane Rawley (7) | Sixth | 19½ out |
| Thursday, September 24 |
| » Defeated Rangers (51-45), 2-1 | Arlington Stadium (5-2) | 40-60 | Won 3 |
| » W: Shane Rawley (3-6) L: Doc Medich (9-6) S: Dick Drago (5) | Sixth | 19 out |
| Friday, September 25 |
| » Defeated Royals (44-50), 8-3 | Royals Stadium (2-2) | 41-60 | Won 4 |
| » W: Floyd Bannister (8-8) L: Jim Wright (1-3) | Sixth | 18 out |
| Saturday, September 26 |
| » Defeated Royals (44-51), 4-2 | Royals Stadium (3-2) | 42-60 | Won 5 |
| » W: Shane Rawley (4-6) L: Larry Gura (10-7) | Sixth | 18 out |
| Sunday, September 27 |
| » Lost to Royals (45-51), 15-3 | Royals Stadium (3-3) | 42-61 | |
| » W: Mike Jones (6-2) L: Ken Clay (1-7) | Sixth | 17½ out |
| Monday, September 28 |
| » Lost to Rangers (53-47), 6-5 | Kingdome (18-34) | 42-62 | Lost 2 |
| » W: Rick Honeycutt (11-6) L: Glenn Abbott (4-8) S: Jim Kern (5) | Sixth | 18 out |
| Tuesday, September 29 |
| » Lost to Rangers (54-47), 6-2 | Kingdome (18-35) | 42-63 | Lost 3 |
| » W: Doc Medich (10-6) L: Bryan Clark (2-5) S: Jim Kern (6) | Sixth | 19 out |
| Wednesday, September 30 |
| » Lost to Rangers (55-47), 3-1 | Kingdome (18-36) | 42-64 | Lost 4 |
| » W: Charlie Hough (4-1) L: Floyd Bannister (8-9) | Sixth | 20 out |
| Friday, October 2 |
| » Defeated Blue Jays (36-68), 8-3 | Kingdome (19-36) | 43-64 | |
| » W: Ken Clay (2-7) L: Juan Berenguer (2-13) | Sixth | 19 out |
| Saturday, October 3 |
| » Lost to Blue Jays (37-68), 4-3 | Kingdome (19-37) | 43-65 | |
| » W: Dave Stieb (11-10) L: Glenn Abbott (4-9) S: Joey McLaughlin (10) | Sixth | 20 out |
| Sunday, October 4 |
| » Defeated Blue Jays (37-69), 2-0 | Kingdome (20-37) | 44-65 | |
| » W: Floyd Bannister (9-9) L: Jackson Todd (2-7) S: Shane Rawley (8) | Sixth | 20 out |
| Thursday, December 3 |
| Future Mariner Chris Snelling is born in North Miami, FL. |
Game information provided by Retrosheet (www.retrosheet.org) |