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| Season Summary | 61-101, Final Rank:4, GB: 39.0 | |
| Days in First | 3 | last on Wednesday, Apr 2, counts only the days a team played and was in first at the end of the day |
| 9 | last on Apr 2, counts all days of the season including off days | |
| Biggest Lead | 0.5 | last on Monday, Mar 31, for days on which they played |
| Farthest Behind | 41 | last on Thursday, Sep 25, for days on which they played |
| Most Games over .500 | 1 | last on Tuesday, Apr 22 |
| Most Games under .500 | 43 | last on Thursday, Sep 25 |
| Longest Winning Streak | 4 | Friday, Aug 29 to Monday, Sep 1 |
| Longest Losing Streak | 12 | Thursday, Sep 11 to Monday, Sep 22 |
| Most Runs Allowed | 15 | Wednesday, Aug 20 |
| Most Runs Scored | 12 | Monday, May 12 and Monday, Sep 1 |
| Longest Game (innings) | 15 | Sunday, Jul 6 |
| Times Shutout by Opponent | 12 | |
| Times Opponent Shutout | 4 | |
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| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Monday, Mar 31 | boxscore | SEA | TEX | W | 5 | 2 | 1-0 | 1 | up 0.5 | Green | Millwood | Putz | 3:12 | 46,334 | + | ||
| 2 | 2 | Tuesday, Apr 1 | boxscore | SEA | TEX | L | 4 | 5 | 1-1 | 1 | Tied | Benoit | Putz | Wilson | 3:17 | 25,204 | - | ||
| 3 | 3 | Wednesday, Apr 2 | boxscore | SEA | TEX | W | 4 | 1 | 2-1 | 1 | Tied | Silva | Jennings | Batista | 2:22 | 21,349 | + | ||
| 4 | 4 | Friday, Apr 4 | boxscore | SEA | @ | BAL | L | 4 | 7 | 2-2 | 2 | 0.5 | Trachsel | Washburn | Sherrill | 3:07 | 14,429 | - | |
| 5 | 5 | Saturday, Apr 5 | boxscore | SEA | @ | BAL | L | 4 | 6 | 2-3 | 3 | 1.5 | Albers | Batista | Sherrill | 3:08 | 24,824 | -- | |
| 6 | 6 | Sunday, Apr 6 | boxscore | SEA | @ | BAL | L | 2 | 3 | 2-4 | 4 | 1.5 | Sarfate | Lowe | 2:23 | 19,215 | --- | ||
| 7 | 7 | Monday, Apr 7 | boxscore | SEA | @ | BAL | L | 4 | 5 | 2-5 | 4 | 2.5 | Sarfate | O'Flaherty | Sherrill | 2:29 | 10,774 | ---- | |
| 8 | 8 | Tuesday, Apr 8 | boxscore | SEA | @ | TBR | W | 6 | 5 | 3-5 | 4 | 1.5 | Bedard | Glover | Rowland-Smith | 3:29 | 36,048 | + | |
| 9 | 9 | Wednesday, Apr 9 | boxscore | SEA | @ | TBR | W | 7 | 1 | 4-5 | 3 | 1.5 | Washburn | Sonnanstine | 2:29 | 12,106 | ++ | ||
| 10 | 10 | Thursday, Apr 10 | boxscore | SEA | @ | TBR | L | 0 | 7 | 4-6 | 4 | 2.0 | Jackson | Batista | 2:23 | 11,898 | - | ||
| 11 | 11 | Friday, Apr 11 | boxscore | SEA | LAA | W | 8 | 5 | 5-6 | 4 | 2.0 | Hernandez | Weaver | Lowe | 3:03 | 28,915 | + | ||
| 12 | 12 | Saturday, Apr 12 | boxscore | SEA | LAA | W | 8 | 3 | 6-6 | 2 | 2.0 | Silva | Garland | 2:36 | 34,963 | ++ | |||
| 13 | 13 | Sunday, Apr 13 | boxscore | SEA | LAA | L | 5 | 10 | 6-7 | 3 | 2.0 | Saunders | Baek | 3:10 | 30,664 | - | |||
| 14 | 14 | Monday, Apr 14 | boxscore | SEA | KCR | L | 1 | 5 | 6-8 | 3 | 3.0 | Greinke | Washburn | 2:26 | 16,751 | -- | |||
| 15 | 15 | Tuesday, Apr 15 | boxscore | SEA | KCR | W | 11 | 6 | 7-8 | 3 | 2.0 | Batista | Bale | 3:25 | 17,137 | + | |||
| 16 | 16 | Wednesday, Apr 16 | boxscore | SEA | @ | OAK | W | 4 | 2 | 8-8 | 3 | 1.0 | Hernandez | Blanton | 2:09 | 21,126 | ++ | ||
| 17 | 17 | Thursday, Apr 17 | boxscore | SEA | @ | OAK | W | 8 | 1 | 9-8 | 2 | 1.0 | Silva | DiNardo | 2:22 | 10,164 | +++ | ||
| 18 | 18 | Friday, Apr 18 | boxscore | SEA | @ | LAA | L | 4 | 5 | 9-9 | 3 | 2.0 | Saunders | Dickey | Rodriguez | 2:21 | 43,939 | - | |
| 19 | 19 | Saturday, Apr 19 | boxscore | SEA | @ | LAA | L | 1 | 4 | 9-10 | 3 | 3.0 | Santana | Washburn | Shields | 2:11 | 43,959 | -- | |
| 20 | 20 | Sunday, Apr 20 | boxscore | SEA | @ | LAA | W | 4 | 2 | 10-10 | 3 | 2.0 | Batista | Moseley | Rowland-Smith | 2:57 | 43,631 | + | |
| 21 | 21 | Tuesday, Apr 22 | boxscore | SEA | BAL | W | 4 | 2 | 11-10 | 3 | 1.0 | Rhodes | Guthrie | Putz | 2:33 | 17,780 | ++ | ||
| 22 | 22 | Wednesday, Apr 23 | boxscore | SEA | BAL | L | 2 | 3 | 11-11 | 3 | 2.0 | Cabrera | Rowland-Smith | Sherrill | 2:30 | 16,823 | - | ||
| 23 | 23 | Thursday, Apr 24 | boxscore | SEA | BAL | L | 7 | 8 | 11-12 | 3 | 3.0 | Bradford | Green | Sherrill | 3:09 | 16,727 | -- | ||
| 24 | 24 | Friday, Apr 25 | boxscore | SEA | OAK | L | 3 | 4 | 11-13 | 3 | 4.0 | Eveland | Batista | Street | 3:14 | 40,845 | --- | ||
| 25 | 25 | Saturday, Apr 26 | boxscore | SEA | OAK | W | 5 | 3 | 12-13 | 3 | 3.0 | Bedard | Duchscherer | 2:56 | 37,563 | + | |||
| 26 | 26 | Sunday, Apr 27 | boxscore | SEA | OAK | L | 2 | 4 | 12-14 | 3 | 4.0 | Blanton | Hernandez | Street | 2:34 | 32,612 | - | ||
| 27 | 27 | Tuesday, Apr 29 | boxscore | SEA | @ | CLE | W | 7 | 2 | 13-14 | 3 | 3.5 | Lowe | Betancourt | 3:14 | 13,827 | + | ||
| 28 | 28 | Wednesday, Apr 30 | boxscore | SEA | @ | CLE | L | 3 | 8 | 13-15 | 3 | 4.5 | Lee | Washburn | 2:49 | 15,279 | - | ||
| 29 | 29 | Thursday, May 1 | boxscore | SEA | @ | CLE | L | 2 | 3 | 11 | 13-16 | 3 | 4.5 | Kobayashi | Lowe | 3:34 | 15,722 | -- | |
| 30 | 30 | Friday, May 2 | boxscore | SEA | @ | NYY | L | 1 | 5 | 13-17 | 3 | 4.5 | Wang | Bedard | 2:57 | 52,199 | --- | ||
| 31 | 31 | Saturday, May 3 | boxscore | SEA | @ | NYY | L | 1 | 6 | 13-18 | 3 | 5.5 | Mussina | Hernandez | 2:51 | 52,810 | ---- | ||
| 32 | 32 | Sunday, May 4 | boxscore | SEA | @ | NYY | L | 2 | 8 | 13-19 | 3 | 6.5 | Rasner | Silva | 2:51 | 53,542 | ----- | ||
| 33 | 33 | Monday, May 5 | boxscore | SEA | TEX | W | 7 | 3 | 14-19 | 3 | 6.5 | Washburn | Millwood | 2:20 | 16,637 | + | |||
| 34 | 34 | Tuesday, May 6 | boxscore | SEA | TEX | L | 1 | 10 | 14-20 | 3 | 7.5 | Ponson | Batista | 2:48 | 15,818 | - | |||
| 35 | 35 | Wednesday, May 7 | boxscore | SEA | TEX | L | 0 | 2 | 14-21 | 4 | 7.5 | Padilla | Bedard | Wilson | 3:00 | 17,173 | -- | ||
| 36 | 36 | Thursday, May 8 | boxscore | SEA | TEX | L | 0 | 5 | 14-22 | 4 | 8.0 | German | Hernandez | 3:03 | 22,922 | --- | |||
| 37 | 37 | Friday, May 9 | boxscore | SEA | CHW | L | 2 | 4 | 14-23 | 4 | 8.0 | Contreras | Silva | Jenks | 2:23 | 27,169 | ---- | ||
| 38 | 38 | Saturday, May 10 | boxscore | SEA | CHW | L | 4 | 8 | 14-24 | 4 | 8.0 | Vazquez | Washburn | 2:58 | 33,078 | ----- | |||
| 39 | 39 | Sunday, May 11 | boxscore | SEA | CHW | W | 6 | 3 | 15-24 | 4 | 8.0 | Batista | Floyd | Putz | 3:03 | 30,346 | + | ||
| 40 | 40 | Monday, May 12 | boxscore | SEA | @ | TEX | L | 12 | 13 | 10 | 15-25 | 4 | 8.5 | Mathis | Morrow | 4:09 | 18,509 | - | |
| 41 | 41 | Tuesday, May 13 | boxscore | SEA | @ | TEX | L | 2 | 5 | 15-26 | 4 | 9.0 | Rupe | Hernandez | Guardado | 2:53 | 15,766 | -- | |
| 42 | 42 | Wednesday, May 14 | boxscore | SEA | @ | TEX | W | 4 | 3 | 12 | 16-26 | 4 | 8.0 | Putz | German | Washburn | 3:45 | 22,934 | + |
| 43 | 43 | Friday, May 16 | boxscore | SEA | SDP | L | 4 | 6 | 16-27 | 4 | 8.5 | Young | Batista | Hoffman | 2:59 | 35,586 | - | ||
| 44 | 44 | Saturday, May 17 | boxscore | SEA | SDP | W | 4 | 2 | 17-27 | 4 | 7.5 | Bedard | Wolf | Putz | 2:18 | 32,290 | + | ||
| 45 | 45 | Sunday, May 18 | boxscore | SEA | SDP | W | 3 | 2 | 18-27 | 4 | 7.5 | Rhodes | Bell | Putz | 2:25 | 35,483 | ++ | ||
| 46 | 46 | Tuesday, May 20 | boxscore | SEA | @ | DET | L | 8 | 12 | 18-28 | 4 | 8.5 | Verlander | Silva | Jones | 2:49 | 39,463 | - | |
| 47 | 47 | Wednesday, May 21 | boxscore | SEA | @ | DET | L | 4 | 9 | 18-29 | 4 | 9.5 | Rogers | Washburn | 2:39 | 36,495 | -- | ||
| 48 | 48 | Thursday, May 22 | boxscore | SEA | @ | DET | L | 2 | 9 | 18-30 | 4 | 9.5 | Bonderman | Batista | Dolsi | 2:44 | 40,166 | --- | |
| 49 | 49 | Friday, May 23 | boxscore | SEA | @ | NYY | L | 2 | 13 | 18-31 | 4 | 10.5 | Pettitte | Bedard | 2:58 | 52,005 | ---- | ||
| 50 | 50 | Saturday, May 24 | boxscore | SEA | @ | NYY | L | 6 | 12 | 18-32 | 4 | 11.5 | Mussina | Silva | 3:10 | 53,512 | ----- | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 51 | 51 | Sunday, May 25 | boxscore | SEA | @ | NYY | L | 5 | 6 | 18-33 | 4 | 11.5 | Ramirez | Putz | Rivera | 3:10 | 54,269 | ------ | |
| 52 | 52 | Monday, May 26 | boxscore | SEA | BOS | L | 3 | 5 | 18-34 | 4 | 12.5 | Colon | Hernandez | 2:30 | 35,818 | ------- | |||
| 53 | 53 | Tuesday, May 27 | boxscore | SEA | BOS | W | 4 | 3 | 19-34 | 4 | 12.5 | Putz | Timlin | 3:00 | 30,758 | + | |||
| 54 | 54 | Wednesday, May 28 | boxscore | SEA | BOS | W | 1 | 0 | 20-34 | 4 | 11.5 | Bedard | Wakefield | Putz | 2:11 | 30,752 | ++ | ||
| 55 | 55 | Friday, May 30 | boxscore | SEA | DET | L | 4 | 7 | 20-35 | 4 | 11.5 | Robertson | Silva | Jones | 2:35 | 34,019 | - | ||
| 56 | 56 | Saturday, May 31 | boxscore | SEA | DET | W | 5 | 0 | 21-35 | 4 | 11.5 | Hernandez | Verlander | 2:28 | 33,441 | + | |||
| 57 | 57 | Sunday, Jun 1 | boxscore | SEA | DET | L | 5 | 7 | 21-36 | 4 | 12.5 | Miner | Putz | 3:07 | 38,610 | - | |||
| 58 | 58 | Monday, Jun 2 | boxscore | SEA | LAA | L | 2 | 4 | 21-37 | 4 | 13.5 | Santana | Washburn | Rodriguez | 2:27 | 22,110 | -- | ||
| 59 | 59 | Tuesday, Jun 3 | boxscore | SEA | LAA | L | 4 | 5 | 21-38 | 4 | 14.5 | Saunders | Bedard | Rodriguez | 2:35 | 23,534 | --- | ||
| 60 | 60 | Wednesday, Jun 4 | boxscore | SEA | LAA | L | 4 | 5 | 21-39 | 4 | 15.5 | Weaver | Silva | Rodriguez | 2:33 | 32,774 | ---- | ||
| 61 | 61 | Friday, Jun 6 | boxscore | SEA | @ | BOS | W | 8 | 0 | 22-39 | 4 | 15.5 | Hernandez | Colon | 2:38 | 37,757 | + | ||
| 62 | 62 | Saturday, Jun 7 | boxscore | SEA | @ | BOS | L | 3 | 11 | 22-40 | 4 | 16.5 | Wakefield | Batista | 2:45 | 37,443 | - | ||
| 63 | 63 | Sunday, Jun 8 | boxscore | SEA | @ | BOS | L | 1 | 2 | 22-41 | 4 | 16.5 | Masterson | Green | Papelbon | 2:46 | 37,198 | -- | |
| 64 | 64 | Monday, Jun 9 | boxscore | SEA | @ | TOR | W | 3 | 2 | 10 | 23-41 | 4 | 15.5 | Dickey | Frasor | Putz | 3:21 | 20,073 | + |
| 65 | 65 | Tuesday, Jun 10 | boxscore | SEA | @ | TOR | L | 1 | 3 | 23-42 | 4 | 16.5 | McGowan | Silva | 2:02 | 36,170 | - | ||
| 66 | 66 | Wednesday, Jun 11 | boxscore | SEA | @ | TOR | W | 2 | 1 | 24-42 | 4 | 16.5 | Hernandez | Ryan | Morrow | 2:34 | 35,702 | + | |
| 67 | 67 | Friday, Jun 13 | boxscore | SEA | WSN | L | 6 | 7 | 24-43 | 4 | 16.5 | Hill | Dickey | Rauch | 3:01 | 35,941 | - | ||
| 68 | 68 | Saturday, Jun 14 | boxscore | SEA | WSN | L | 2 | 5 | 24-44 | 4 | 16.5 | Clippard | Batista | Rauch | 2:49 | 32,145 | -- | ||
| 69 | 69 | Sunday, Jun 15 | boxscore | SEA | WSN | L | 2 | 6 | 24-45 | 4 | 17.5 | Colome | Lowe | 2:52 | 38,548 | --- | |||
| 70 | 70 | Monday, Jun 16 | boxscore | SEA | FLA | L | 1 | 6 | 24-46 | 4 | 17.5 | Miller | Silva | 2:42 | 21,609 | ---- | |||
| 71 | 71 | Tuesday, Jun 17 | boxscore | SEA | FLA | W | 5 | 4 | 25-46 | 4 | 17.5 | Hernandez | Olsen | Morrow | 2:36 | 20,214 | + | ||
| 72 | 72 | Wednesday, Jun 18 | boxscore | SEA | FLA | L | 3 | 8 | 25-47 | 4 | 17.5 | Tucker | Dickey | 3:03 | 24,163 | - | |||
| 73 | 73 | Friday, Jun 20 | boxscore | SEA | @ | ATL | W | 10 | 2 | 26-47 | 4 | 17.5 | Rowland-Smith | Campillo | 2:53 | 40,268 | + | ||
| 74 | 74 | Saturday, Jun 21 | boxscore | SEA | @ | ATL | L | 4 | 5 | 26-48 | 4 | 18.5 | Boyer | Batista | 3:10 | 47,158 | - | ||
| 75 | 75 | Sunday, Jun 22 | boxscore | SEA | @ | ATL | L | 3 | 8 | 26-49 | 4 | 19.5 | Hudson | Silva | 2:25 | 30,965 | -- | ||
| 76 | 76 | Monday, Jun 23 | boxscore | SEA | @ | NYM | W | 5 | 2 | 27-49 | 4 | 19.5 | Rowland-Smith | Santana | Rhodes | 2:39 | 49,789 | + | |
| 77 | 77 | Tuesday, Jun 24 | boxscore | SEA | @ | NYM | W | 11 | 0 | 28-49 | 4 | 19.5 | Dickey | Perez | 2:45 | 49,386 | ++ | ||
| 78 | 78 | Wednesday, Jun 25 | boxscore | SEA | @ | NYM | L | 2 | 8 | 28-50 | 4 | 19.5 | Maine | Batista | 2:25 | 52,154 | - | ||
| 79 | 79 | Friday, Jun 27 | boxscore | SEA | @ | SDP | W | 5 | 2 | 29-50 | 4 | 18.5 | Washburn | Wolf | Morrow | 3:08 | 28,640 | + | |
| 80 | 80 | Saturday, Jun 28 | boxscore | SEA | @ | SDP | W | 4 | 2 | 30-50 | 4 | 17.5 | Silva | Baek | Morrow | 2:19 | 36,396 | ++ | |
| 81 | 81 | Sunday, Jun 29 | boxscore | SEA | @ | SDP | W | 9 | 2 | 31-50 | 4 | 17.5 | Bedard | Peavy | 2:49 | 29,966 | +++ | ||
| 82 | 82 | Monday, Jun 30 | boxscore | SEA | TOR | L | 0 | 2 | 31-51 | 4 | 17.5 | Halladay | Dickey | 2:25 | 30,179 | - | |||
| 83 | 83 | Tuesday, Jul 1 | boxscore | SEA | TOR | W | 7 | 6 | 32-51 | 4 | 17.5 | Morrow | Downs | 3:05 | 24,586 | + | |||
| 84 | 84 | Wednesday, Jul 2 | boxscore | SEA | TOR | W | 4 | 2 | 33-51 | 4 | 17.5 | Washburn | McGowan | Morrow | 2:25 | 23,283 | ++ | ||
| 85 | 85 | Thursday, Jul 3 | boxscore | SEA | DET | L | 4 | 8 | 33-52 | 4 | 18.0 | Verlander | Silva | Rodney | 2:52 | 22,523 | - | ||
| 86 | 86 | Friday, Jul 4 | boxscore | SEA | DET | W | 4 | 1 | 34-52 | 4 | 18.0 | Bedard | Rogers | Morrow | 2:43 | 30,564 | + | ||
| 87 | 87 | Saturday, Jul 5 | boxscore | SEA | DET | W | 3 | 2 | 35-52 | 4 | 17.0 | Batista | Rodney | Morrow | 2:36 | 30,373 | ++ | ||
| 88 | 88 | Sunday, Jul 6 | boxscore | SEA | DET | L | 1 | 2 | 15 | 35-53 | 4 | 18.0 | Lopez | Burke | Jones | 4:12 | 29,083 | - | |
| 89 | 89 | Monday, Jul 7 | boxscore | SEA | @ | OAK | L | 3 | 4 | 35-54 | 4 | 19.0 | Eveland | Washburn | Street | 2:23 | 11,129 | -- | |
| 90 | 90 | Tuesday, Jul 8 | boxscore | SEA | @ | OAK | L | 0 | 2 | 35-55 | 4 | 19.0 | Duchscherer | Silva | 1:49 | 12,543 | --- | ||
| 91 | 91 | Wednesday, Jul 9 | boxscore | SEA | @ | OAK | W | 6 | 4 | 36-55 | 4 | 18.0 | Corcoran | Blanton | Morrow | 2:42 | 21,128 | + | |
| 92 | 92 | Thursday, Jul 10 | boxscore | SEA | @ | OAK | L | 2 | 3 | 11 | 36-56 | 4 | 19.0 | Street | Jimenez | 3:25 | 15,187 | - | |
| 93 | 93 | Friday, Jul 11 | boxscore | SEA | @ | KCR | L | 1 | 3 | 36-57 | 4 | 19.0 | Hochevar | Hernandez | Soria | 2:14 | 25,345 | -- | |
| 94 | 94 | Saturday, Jul 12 | boxscore | SEA | @ | KCR | L | 4 | 5 | 36-58 | 4 | 20.0 | Ramirez | Morrow | 2:31 | 23,792 | --- | ||
| 95 | 95 | Sunday, Jul 13 | boxscore | SEA | @ | KCR | W | 4 | 3 | 37-58 | 4 | 20.0 | Green | Soria | Morrow | 2:34 | 21,421 | + | |
| 96 | 96 | Friday, Jul 18 | boxscore | SEA | CLE | W | 8 | 2 | 38-58 | 4 | 20.0 | Hernandez | Laffey | 2:39 | 42,570 | ++ | |||
| 97 | 97 | Saturday, Jul 19 | boxscore | SEA | CLE | L | 6 | 9 | 38-59 | 4 | 21.0 | Sowers | Batista | 3:04 | 37,869 | - | |||
| 98 | 98 | Sunday, Jul 20 | boxscore | SEA | CLE | L | 2 | 6 | 38-60 | 4 | 22.0 | Lee | Silva | 2:37 | 32,230 | -- | |||
| 99 | 99 | Monday, Jul 21 | boxscore | SEA | BOS | L | 0 | 4 | 38-61 | 4 | 22.0 | Lester | Washburn | Papelbon | 2:57 | 37,861 | --- | ||
| 100 | 100 | Tuesday, Jul 22 | boxscore | SEA | BOS | L | 2 | 4 | 38-62 | 4 | 23.0 | Matsuzaka | Dickey | Papelbon | 2:48 | 38,425 | ---- | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 101 | 101 | Wednesday, Jul 23 | boxscore | SEA | BOS | L | 3 | 6 | 12 | 38-63 | 4 | 24.0 | Papelbon | Green | Hansen | 4:01 | 43,231 | ----- | |
| 102 | 102 | Friday, Jul 25 | boxscore | SEA | @ | TOR | L | 4 | 5 | 10 | 38-64 | 4 | 25.0 | Carlson | Lowe | 3:32 | 28,463 | ------ | |
| 103 | 103 | Saturday, Jul 26 | boxscore | SEA | @ | TOR | L | 3 | 8 | 38-65 | 4 | 26.0 | Purcey | Dickey | 2:26 | 33,041 | ------- | ||
| 104 | 104 | Sunday, Jul 27 | boxscore | SEA | @ | TOR | W | 5 | 1 | 39-65 | 4 | 25.0 | Washburn | Marcum | 2:28 | 33,367 | + | ||
| 105 | 105 | Monday, Jul 28 | boxscore | SEA | @ | TEX | W | 7 | 5 | 40-65 | 4 | 25.0 | Green | Francisco | Morrow | 2:55 | 21,742 | ++ | |
| 106 | 106 | Tuesday, Jul 29 | boxscore | SEA | @ | TEX | L | 10 | 11 | 40-66 | 4 | 26.0 | Wilson | Putz | 3:11 | 17,618 | - | ||
| 107 | 107 | Wednesday, Jul 30 | boxscore | SEA | @ | TEX | L | 3 | 4 | 40-67 | 4 | 27.0 | Guardado | Rhodes | Wilson | 3:04 | 23,894 | -- | |
| 108 | 108 | Thursday, Jul 31 | boxscore | SEA | @ | TEX | W | 8 | 5 | 41-67 | 4 | 27.0 | Dickey | Harrison | 2:48 | 17,839 | + | ||
| 109 | 109 | Friday, Aug 1 | boxscore | SEA | BAL | L | 5 | 10 | 41-68 | 4 | 28.0 | Olson | Washburn | 2:52 | 28,114 | - | |||
| 110 | 110 | Saturday, Aug 2 | boxscore | SEA | BAL | L | 1 | 3 | 41-69 | 4 | 28.0 | Guthrie | Hernandez | 2:28 | 30,502 | -- | |||
| 111 | 111 | Sunday, Aug 3 | boxscore | SEA | BAL | W | 8 | 4 | 42-69 | 4 | 27.0 | Putz | Cabrera | 2:39 | 33,334 | + | |||
| 112 | 112 | Monday, Aug 4 | boxscore | SEA | MIN | W | 11 | 6 | 43-69 | 4 | 27.0 | Corcoran | Bass | 3:01 | 27,758 | ++ | |||
| 113 | 113 | Tuesday, Aug 5 | boxscore | SEA | MIN | W | 8 | 7 | 44-69 | 4 | 26.0 | Putz | Guerrier | 3:14 | 26,083 | +++ | |||
| 114 | 114 | Wednesday, Aug 6 | boxscore | SEA | MIN | L | 3 | 7 | 44-70 | 4 | 27.0 | Blackburn | Washburn | 2:50 | 30,441 | - | |||
| 115 | 115 | Thursday, Aug 7 | boxscore | SEA | TBR | W | 2 | 1 | 45-70 | 4 | 26.5 | Putz | Wheeler | 2:09 | 25,423 | + | |||
| 116 | 116 | Friday, Aug 8 | boxscore | SEA | TBR | L | 3 | 5 | 45-71 | 4 | 27.5 | Shields | Silva | Percival | 2:29 | 30,220 | - | ||
| 117 | 117 | Saturday, Aug 9 | boxscore | SEA | TBR | L | 7 | 8 | 11 | 45-72 | 4 | 28.5 | Bradford | Batista | Percival | 4:26 | 27,905 | -- | |
| 118 | 118 | Sunday, Aug 10 | boxscore | SEA | TBR | L | 3 | 11 | 45-73 | 4 | 29.5 | Jackson | Dickey | 2:55 | 30,336 | --- | |||
| 119 | 119 | Tuesday, Aug 12 | boxscore | SEA | @ | LAA | L | 3 | 7 | 45-74 | 4 | 30.5 | Garland | Washburn | Rodriguez | 2:30 | 42,086 | ---- | |
| 120 | 120 | Wednesday, Aug 13 | boxscore | SEA | @ | LAA | W | 10 | 7 | 12 | 46-74 | 4 | 29.5 | Corcoran | Speier | 3:27 | 42,754 | + | |
| 121 | 121 | Friday, Aug 15 | boxscore | SEA | @ | MIN | L | 3 | 9 | 46-75 | 4 | 29.5 | Liriano | Silva | 2:28 | 32,208 | - | ||
| 122 | 122 | Saturday, Aug 16 | boxscore | SEA | @ | MIN | L | 6 | 7 | 46-76 | 4 | 30.5 | Reyes | Jimenez | 3:06 | 36,316 | -- | ||
| 123 | 123 | Sunday, Aug 17 | boxscore | SEA | @ | MIN | L | 8 | 11 | 46-77 | 4 | 30.5 | Perkins | Feierabend | Nathan | 3:21 | 35,478 | --- | |
| 124 | 124 | Monday, Aug 18 | boxscore | SEA | @ | CHW | L | 5 | 13 | 46-78 | 4 | 30.5 | Buehrle | Washburn | 2:43 | 39,002 | ---- | ||
| 125 | 125 | Tuesday, Aug 19 | boxscore | SEA | @ | CHW | L | 0 | 5 | 46-79 | 4 | 30.5 | Richard | Hernandez | 2:36 | 26,414 | ----- | ||
| 126 | 126 | Wednesday, Aug 20 | boxscore | SEA | @ | CHW | L | 3 | 15 | 46-80 | 4 | 31.5 | Floyd | Dickey | 2:30 | 27,000 | ------ | ||
| 127 | 127 | Thursday, Aug 21 | boxscore | SEA | OAK | L | 0 | 2 | 46-81 | 4 | 31.5 | Smith | Rowland-Smith | Ziegler | 2:40 | 25,611 | ------- | ||
| 128 | 128 | Friday, Aug 22 | boxscore | SEA | OAK | W | 7 | 5 | 47-81 | 4 | 30.5 | Corcoran | Blevins | Putz | 2:44 | 26,603 | + | ||
| 129 | 129 | Saturday, Aug 23 | boxscore | SEA | OAK | L | 1 | 5 | 47-82 | 4 | 31.5 | Eveland | Washburn | 2:32 | 34,145 | - | |||
| 130 | 130 | Sunday, Aug 24 | boxscore | SEA | OAK | W | 8 | 4 | 48-82 | 4 | 31.5 | Hernandez | Meyer | Putz | 2:36 | 28,731 | + | ||
| 131 | 131 | Monday, Aug 25 | boxscore | SEA | MIN | W | 4 | 2 | 11 | 49-82 | 4 | 30.5 | Dickey | Crain | 3:14 | 23,277 | ++ | ||
| 132 | 132 | Tuesday, Aug 26 | boxscore | SEA | MIN | W | 3 | 2 | 50-82 | 4 | 30.5 | Rowland-Smith | Baker | Corcoran | 2:31 | 26,292 | +++ | ||
| 133 | 133 | Wednesday, Aug 27 | boxscore | SEA | MIN | L | 5 | 6 | 50-83 | 4 | 30.5 | Perkins | Green | Nathan | 2:40 | 23,581 | - | ||
| 134 | 134 | Friday, Aug 29 | boxscore | SEA | @ | CLE | W | 3 | 2 | 51-83 | 4 | 31.0 | Hernandez | Sowers | Putz | 3:05 | 26,047 | + | |
| 135 | 135 | Saturday, Aug 30 | boxscore | SEA | @ | CLE | W | 4 | 3 | 10 | 52-83 | 4 | 31.0 | Putz | Lewis | Messenger | 3:15 | 33,387 | ++ |
| 136 | 136 | Sunday, Aug 31 | boxscore | SEA | @ | CLE | W | 6 | 4 | 53-83 | 4 | 30.0 | Rowland-Smith | Jackson | Corcoran | 3:06 | 35,376 | +++ | |
| 137 | 137 | Monday, Sep 1 | boxscore | SEA | @ | TEX | W | 12 | 6 | 54-83 | 4 | 29.5 | Green | Mendoza | 2:59 | 16,171 | ++++ | ||
| 138 | 138 | Tuesday, Sep 2 | boxscore | SEA | @ | TEX | L | 4 | 6 | 54-84 | 4 | 30.5 | McCarthy | Feierabend | Francisco | 2:35 | 14,521 | - | |
| 139 | 139 | Wednesday, Sep 3 | boxscore | SEA | @ | TEX | L | 0 | 1 | 54-85 | 4 | 30.5 | Nippert | Hernandez | Francisco | 2:11 | 12,882 | -- | |
| 140 | 140 | Friday, Sep 5 | boxscore | SEA | NYY | W | 3 | 1 | 55-85 | 4 | 30.0 | Morrow | Pettitte | Putz | 2:22 | 39,518 | + | ||
| 141 | 141 | Saturday, Sep 6 | boxscore | SEA | NYY | L | 4 | 7 | 55-86 | 4 | 30.0 | Ponson | Green | Rivera | 2:37 | 44,473 | - | ||
| 142 | 142 | Sunday, Sep 7 | boxscore | SEA | NYY | W | 5 | 2 | 56-86 | 4 | 30.0 | Feierabend | Mussina | Putz | 2:32 | 42,677 | + | ||
| 143 | 143 | Tuesday, Sep 9 | boxscore | SEA | TEX | L | 3 | 7 | 56-87 | 4 | 30.5 | Padilla | Hernandez | Madrigal | 3:08 | 22,704 | - | ||
| 144 | 144 | Wednesday, Sep 10 | boxscore | SEA | TEX | W | 8 | 7 | 57-87 | 4 | 30.5 | Corcoran | Millwood | Putz | 3:11 | 23,644 | + | ||
| 145 | 145 | Thursday, Sep 11 | boxscore | SEA | @ | LAA | L | 4 | 7 | 57-88 | 4 | 31.5 | Weaver | Morrow | Rodriguez | 3:01 | 38,205 | - | |
| 146 | 146 | Friday, Sep 12 | boxscore | SEA | @ | LAA | L | 3 | 5 | 57-89 | 4 | 32.5 | Arredondo | Batista | 2:29 | 43,743 | -- | ||
| 147 | 147 | Saturday, Sep 13 | boxscore | SEA | @ | LAA | L | 2 | 5 | 57-90 | 4 | 33.5 | Garland | Feierabend | Rodriguez | 2:48 | 43,757 | --- | |
| 148 | 148 | Sunday, Sep 14 | boxscore | SEA | @ | LAA | L | 3 | 4 | 57-91 | 4 | 34.5 | Arredondo | Corcoran | 2:22 | 41,528 | ---- | ||
| 149 | 149 | Monday, Sep 15 | boxscore | SEA | @ | KCR | L | 0 | 3 | 57-92 | 4 | 35.0 | Davies | Silva | Soria | 2:15 | 10,307 | ----- | |
| 150 | 150 | Tuesday, Sep 16 | boxscore | SEA | @ | KCR | L | 3 | 6 | 57-93 | 4 | 35.0 | Duckworth | Morrow | Soria | 2:31 | 19,135 | ------ | |
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 151 | 151 | Wednesday, Sep 17 | boxscore | SEA | @ | KCR | L | 2 | 5 | 57-94 | 4 | 35.0 | Meche | Corcoran | Soria | 2:39 | 13,382 | ------- | |
| 152 | 152 | Thursday, Sep 18 | boxscore | SEA | @ | KCR | L | 0 | 12 | 57-95 | 4 | 36.0 | Greinke | Feierabend | 2:36 | 14,144 | -------- | ||
| 153 | 153 | Friday, Sep 19 | boxscore | SEA | @ | OAK | L | 0 | 2 | 57-96 | 4 | 37.0 | Eveland | Hernandez | Ziegler | 2:05 | 30,149 | --------- | |
| 154 | 154 | Saturday, Sep 20 | boxscore | SEA | @ | OAK | L | 7 | 8 | 57-97 | 4 | 38.0 | Street | Thomas | Ziegler | 2:45 | 18,756 | ---------- | |
| 155 | 155 | Sunday, Sep 21 | boxscore | SEA | @ | OAK | L | 3 | 5 | 57-98 | 4 | 39.0 | Ziegler | Batista | Devine | 2:22 | 18,707 | ----------- | |
| 156 | 156 | Monday, Sep 22 | boxscore | SEA | LAA | L | 1 | 2 | 57-99 | 4 | 40.0 | Santana | Rowland-Smith | Rodriguez | 2:20 | 19,717 | ------------ | ||
| 157 | 157 | Tuesday, Sep 23 | boxscore | SEA | LAA | W | 9 | 6 | 58-99 | 4 | 39.0 | Corcoran | Jepsen | Putz | 2:51 | 19,065 | + | ||
| 158 | 158 | Wednesday, Sep 24 | boxscore | SEA | LAA | L | 5 | 6 | 58-100 | 4 | 40.0 | Oliver | Lowe | Rodriguez | 3:02 | 19,015 | - | ||
| 159 | 159 | Thursday, Sep 25 | boxscore | SEA | LAA | L | 4 | 6 | 58-101 | 4 | 41.0 | Arredondo | Putz | Shields | 2:58 | 16,939 | -- | ||
| 160 | 160 | Friday, Sep 26 | boxscore | SEA | OAK | W | 10 | 8 | 59-101 | 4 | 40.0 | Morrow | Gallagher | Corcoran | 2:51 | 24,662 | + | ||
| 161 | 161 | Saturday, Sep 27 | boxscore | SEA | OAK | W | 7 | 3 | 60-101 | 4 | 39.0 | Rowland-Smith | Smith | Green | 2:20 | 24,440 | ++ | ||
| 162 | 162 | Sunday, Sep 28 | boxscore | SEA | OAK | W | 4 | 3 | 61-101 | 4 | 39.0 | Dickey | Outman | Putz | 2:41 | 27,110 | +++ | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak |
Rank and Games Behind are at the end of all games played on that date.