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| Season Summary | 85-77, Final Rank:3, GB: 12.0 | |
| Days in First | 22 | last on Tuesday, May 5, counts only the days a team played and was in first at the end of the day |
| 27 | last on May 5, counts all days of the season including off days | |
| Biggest Lead | 3.5 | last on Friday, May 1, for days on which they played |
| Farthest Behind | 13 | last on Sunday, Sep 13, for days on which they played |
| Most Games over .500 | 8 | last on Sunday, Oct 4 |
| Most Games under .500 | 5 | last on Tuesday, May 26 |
| Longest Winning Streak | 6 | Thursday, Apr 9 to Wednesday, Apr 15 |
| Longest Losing Streak | 6 | Monday, May 4 to Saturday, May 9 |
| Most Runs Allowed | 12 | Tuesday, Jul 7 and Sunday, Jul 26 |
| Most Runs Scored | 11 | Wednesday, Apr 15, Wednesday, Aug 5 and Sunday, Aug 9 |
| Longest Game (innings) | 15 | Sunday, May 3 |
| Times Shutout by Opponent | 10 | |
| Times Opponent Shutout | 10 | |
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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, Apr 6 | boxscore | SEA | @ | MIN | W | 6 | 1 | 1-0 | 1 | Tied | Hernandez | Liriano | 2:21 | 48,514 | + | ||
| 2 | 2 | Tuesday, Apr 7 | boxscore | SEA | @ | MIN | L | 5 | 6 | 1-1 | 2 | 0.5 | Ayala | Morrow | 2:49 | 23,755 | - | ||
| 3 | 3 | Wednesday, Apr 8 | boxscore | SEA | @ | MIN | L | 5 | 6 | 1-2 | 3 | 1.5 | Slowey | Silva | Nathan | 2:34 | 22,270 | -- | |
| 4 | 4 | Thursday, Apr 9 | boxscore | SEA | @ | MIN | W | 2 | 0 | 2-2 | 3 | 1.5 | Washburn | Perkins | Morrow | 2:11 | 20,105 | + | |
| 5 | 5 | Friday, Apr 10 | boxscore | SEA | @ | OAK | W | 5 | 4 | 3-2 | 2 | 0.5 | Jakubauskas | Anderson | Aardsma | 2:56 | 36,067 | ++ | |
| 6 | 6 | Saturday, Apr 11 | boxscore | SEA | @ | OAK | W | 8 | 5 | 4-2 | 1 | up 0.5 | Batista | Casilla | Morrow | 2:57 | 19,560 | +++ | |
| 7 | 7 | Sunday, Apr 12 | boxscore | SEA | @ | OAK | W | 1 | 0 | 5-2 | 1 | up 1.5 | Bedard | Cahill | Aardsma | 2:25 | 12,127 | ++++ | |
| 8 | 8 | Tuesday, Apr 14 | boxscore | SEA | LAA | W | 3 | 2 | 10 | 6-2 | 1 | up 2.0 | Corcoran | Shields | 2:53 | 45,958 | +++++ | ||
| 9 | 9 | Wednesday, Apr 15 | boxscore | SEA | LAA | W | 11 | 3 | 7-2 | 1 | up 3.0 | Washburn | Weaver | 2:55 | 18,519 | ++++++ | |||
| 10 | 10 | Thursday, Apr 16 | boxscore | SEA | LAA | L | 1 | 5 | 7-3 | 1 | up 2.5 | Saunders | Jakubauskas | 2:40 | 18,528 | - | |||
| 11 | 11 | Friday, Apr 17 | boxscore | SEA | DET | W | 6 | 3 | 8-3 | 1 | up 2.5 | Hernandez | Verlander | Morrow | 2:26 | 35,857 | + | ||
| 12 | 12 | Saturday, Apr 18 | boxscore | SEA | DET | L | 0 | 2 | 8-4 | 1 | up 2.5 | Jackson | Bedard | Rodney | 2:38 | 31,963 | - | ||
| 13 | 13 | Sunday, Apr 19 | boxscore | SEA | DET | L | 2 | 8 | 8-5 | 1 | up 2.5 | Porcello | Silva | 2:41 | 30,469 | -- | |||
| 14 | 14 | Tuesday, Apr 21 | boxscore | SEA | TBR | W | 4 | 2 | 9-5 | 1 | up 2.5 | Washburn | Sonnanstine | Morrow | 2:23 | 19,582 | + | ||
| 15 | 15 | Wednesday, Apr 22 | boxscore | SEA | TBR | L | 3 | 9 | 9-6 | 1 | up 2.5 | Niemann | Jakubauskas | 3:20 | 16,477 | - | |||
| 16 | 16 | Thursday, Apr 23 | boxscore | SEA | TBR | W | 1 | 0 | 10-6 | 1 | up 3.5 | Hernandez | Shields | Morrow | 2:22 | 17,671 | + | ||
| 17 | 17 | Friday, Apr 24 | boxscore | SEA | @ | LAA | W | 8 | 3 | 11-6 | 1 | up 3.5 | Bedard | Loux | 2:59 | 43,083 | ++ | ||
| 18 | 18 | Saturday, Apr 25 | boxscore | SEA | @ | LAA | W | 9 | 8 | 12-6 | 1 | up 3.5 | Silva | Ortega | Aardsma | 3:04 | 43,542 | +++ | |
| 19 | 19 | Sunday, Apr 26 | boxscore | SEA | @ | LAA | L | 0 | 8 | 12-7 | 1 | up 3.5 | Weaver | Washburn | 2:43 | 43,057 | - | ||
| 20 | 20 | Tuesday, Apr 28 | boxscore | SEA | @ | CHW | L | 1 | 2 | 12-8 | 1 | up 2.5 | Colon | Jakubauskas | Jenks | 1:52 | 0 | -- | |
| 21 | 21 | Tuesday, Apr 28 | boxscore | SEA | @ | CHW | W | 9 | 1 | 13-8 | 1 | up 2.5 | Hernandez | Danks | 2:32 | 25,042 | + | ||
| 22 | 22 | Wednesday, Apr 29 | boxscore | SEA | @ | CHW | L | 3 | 6 | 13-9 | 1 | up 2.0 | Thornton | Kelley | Jenks | 3:10 | 18,023 | - | |
| 23 | 23 | Friday, May 1 | boxscore | SEA | OAK | W | 8 | 7 | 14-9 | 1 | up 3.5 | Kelley | Springer | 2:59 | 25,760 | + | |||
| 24 | 24 | Saturday, May 2 | boxscore | SEA | OAK | L | 2 | 3 | 14-10 | 1 | up 2.5 | Bailey | Aardsma | Wuertz | 2:43 | 29,484 | - | ||
| 25 | 25 | Sunday, May 3 | boxscore | SEA | OAK | W | 8 | 7 | 15 | 15-10 | 1 | up 2.5 | Vargas | Eveland | 5:02 | 29,963 | + | ||
| 26 | 26 | Monday, May 4 | boxscore | SEA | TEX | L | 5 | 6 | 15-11 | 1 | up 1.5 | Millwood | Hernandez | Francisco | 2:28 | 16,431 | - | ||
| 27 | 27 | Tuesday, May 5 | boxscore | SEA | TEX | L | 2 | 7 | 10 | 15-12 | 1 | up 0.5 | O'Day | Stark | 3:12 | 19,811 | -- | ||
| 28 | 28 | Wednesday, May 6 | boxscore | SEA | @ | KCR | L | 1 | 9 | 15-13 | 2 | 0.5 | Ponson | Silva | 2:37 | 15,291 | --- | ||
| 29 | 29 | Thursday, May 7 | boxscore | SEA | @ | KCR | L | 1 | 3 | 15-14 | 2 | 0.5 | Bannister | Washburn | Soria | 2:33 | 32,646 | ---- | |
| 30 | 30 | Friday, May 8 | boxscore | SEA | @ | MIN | L | 0 | 11 | 15-15 | 2 | 1.5 | Baker | Jakubauskas | 2:47 | 29,714 | ----- | ||
| 31 | 31 | Saturday, May 9 | boxscore | SEA | @ | MIN | L | 6 | 9 | 15-16 | 3 | 1.5 | Liriano | Hernandez | Nathan | 2:56 | 29,552 | ------ | |
| 32 | 32 | Sunday, May 10 | boxscore | SEA | @ | MIN | W | 5 | 3 | 16-16 | 3 | 1.5 | Batista | Crain | Morrow | 3:19 | 25,555 | + | |
| 33 | 33 | Tuesday, May 12 | boxscore | SEA | @ | TEX | L | 1 | 7 | 16-17 | 3 | 2.5 | Holland | Lowe | 2:50 | 16,564 | - | ||
| 34 | 34 | Wednesday, May 13 | boxscore | SEA | @ | TEX | L | 5 | 6 | 11 | 16-18 | 3 | 3.5 | Wilson | Morrow | 3:29 | 25,865 | -- | |
| 35 | 35 | Thursday, May 14 | boxscore | SEA | @ | TEX | L | 2 | 3 | 16-19 | 3 | 4.5 | Harrison | Morrow | 2:10 | 21,002 | --- | ||
| 36 | 36 | Friday, May 15 | boxscore | SEA | BOS | W | 5 | 4 | 17-19 | 3 | 4.5 | Jakubauskas | Lester | Aardsma | 3:03 | 34,964 | + | ||
| 37 | 37 | Saturday, May 16 | boxscore | SEA | BOS | L | 3 | 5 | 17-20 | 3 | 5.5 | Beckett | Olson | Papelbon | 2:54 | 42,568 | - | ||
| 38 | 38 | Sunday, May 17 | boxscore | SEA | BOS | W | 3 | 2 | 18-20 | 3 | 5.5 | Aardsma | Ramirez | 3:03 | 40,848 | + | |||
| 39 | 39 | Monday, May 18 | boxscore | SEA | LAA | L | 6 | 10 | 18-21 | 3 | 6.0 | Lackey | Washburn | 3:04 | 17,338 | - | |||
| 40 | 40 | Tuesday, May 19 | boxscore | SEA | LAA | L | 5 | 6 | 18-22 | 3 | 6.0 | Palmer | Hernandez | Fuentes | 2:53 | 16,034 | -- | ||
| 41 | 41 | Wednesday, May 20 | boxscore | SEA | LAA | W | 1 | 0 | 19-22 | 3 | 5.0 | Jakubauskas | Santana | Aardsma | 2:25 | 18,581 | + | ||
| 42 | 42 | Thursday, May 21 | boxscore | SEA | LAA | L | 0 | 3 | 19-23 | 3 | 5.0 | Saunders | Bedard | Fuentes | 2:46 | 18,467 | - | ||
| 43 | 43 | Friday, May 22 | boxscore | SEA | SFG | W | 2 | 1 | 12 | 20-23 | 3 | 5.0 | White | Miller | 3:55 | 38,527 | + | ||
| 44 | 44 | Saturday, May 23 | boxscore | SEA | SFG | L | 1 | 5 | 20-24 | 3 | 6.0 | Cain | Lowe | 2:41 | 33,348 | - | |||
| 45 | 45 | Sunday, May 24 | boxscore | SEA | SFG | W | 5 | 4 | 21-24 | 3 | 6.0 | Hernandez | Zito | Aardsma | 2:15 | 36,622 | + | ||
| 46 | 46 | Monday, May 25 | boxscore | SEA | @ | OAK | L | 1 | 6 | 21-25 | 3 | 6.0 | Anderson | Jakubauskas | Cameron | 2:48 | 15,280 | - | |
| 47 | 47 | Tuesday, May 26 | boxscore | SEA | @ | OAK | L | 3 | 4 | 21-26 | 3 | 7.0 | Braden | Batista | Bailey | 2:27 | 10,371 | -- | |
| 48 | 48 | Wednesday, May 27 | boxscore | SEA | @ | OAK | W | 6 | 1 | 22-26 | 3 | 6.0 | Bedard | Cahill | 2:37 | 30,012 | + | ||
| 49 | 49 | Friday, May 29 | boxscore | SEA | @ | LAA | W | 5 | 2 | 23-26 | 3 | 6.5 | Vargas | Lackey | Aardsma | 2:28 | 38,492 | ++ | |
| 50 | 50 | Saturday, May 30 | boxscore | SEA | @ | LAA | W | 4 | 3 | 10 | 24-26 | 3 | 6.5 | Batista | Arredondo | Aardsma | 3:11 | 39,329 | +++ |
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 51 | 51 | Sunday, May 31 | boxscore | SEA | @ | LAA | L | 8 | 9 | 24-27 | 3 | 6.5 | Speier | Aardsma | 2:56 | 38,632 | - | ||
| 52 | 52 | Monday, Jun 1 | boxscore | SEA | BAL | L | 0 | 1 | 24-28 | 3 | 7.0 | Hill | Washburn | Sherrill | 2:13 | 16,983 | -- | ||
| 53 | 53 | Tuesday, Jun 2 | boxscore | SEA | BAL | W | 8 | 2 | 25-28 | 3 | 6.0 | Bedard | Hernandez | 2:54 | 18,043 | + | |||
| 54 | 54 | Wednesday, Jun 3 | boxscore | SEA | BAL | W | 3 | 2 | 26-28 | 3 | 6.0 | Aardsma | Johnson | 2:28 | 18,668 | ++ | |||
| 55 | 55 | Friday, Jun 5 | boxscore | SEA | MIN | L | 1 | 2 | 10 | 26-29 | 3 | 6.5 | Guerrier | Lowe | Nathan | 3:06 | 35,844 | - | |
| 56 | 56 | Saturday, Jun 6 | boxscore | SEA | MIN | W | 2 | 1 | 27-29 | 3 | 5.5 | Jakubauskas | Henn | Aardsma | 2:47 | 30,619 | + | ||
| 57 | 57 | Sunday, Jun 7 | boxscore | SEA | MIN | W | 4 | 2 | 28-29 | 3 | 5.5 | Bedard | Slowey | White | 3:32 | 37,714 | ++ | ||
| 58 | 58 | Tuesday, Jun 9 | boxscore | SEA | @ | BAL | L | 1 | 3 | 28-30 | 3 | 5.0 | Bergesen | Vargas | Sherrill | 2:19 | 17,358 | - | |
| 59 | 59 | Wednesday, Jun 10 | boxscore | SEA | @ | BAL | W | 4 | 1 | 29-30 | 3 | 4.5 | Hernandez | Guthrie | Aardsma | 2:25 | 12,770 | + | |
| 60 | 60 | Thursday, Jun 11 | boxscore | SEA | @ | BAL | W | 6 | 3 | 30-30 | 2 | 4.5 | Olson | Uehara | Aardsma | 2:53 | 12,260 | ++ | |
| 61 | 61 | Friday, Jun 12 | boxscore | SEA | @ | COL | L | 4 | 6 | 30-31 | 3 | 5.5 | Jimenez | Washburn | 2:28 | 30,365 | - | ||
| 62 | 62 | Saturday, Jun 13 | boxscore | SEA | @ | COL | L | 3 | 5 | 30-32 | 3 | 5.5 | Corpas | Lowe | Street | 2:59 | 31,101 | -- | |
| 63 | 63 | Sunday, Jun 14 | boxscore | SEA | @ | COL | L | 1 | 7 | 30-33 | 3 | 5.5 | Hammel | Vargas | 2:35 | 38,614 | --- | ||
| 64 | 64 | Tuesday, Jun 16 | boxscore | SEA | @ | SDP | W | 5 | 0 | 31-33 | 3 | 5.5 | Hernandez | Correia | 2:14 | 17,040 | + | ||
| 65 | 65 | Wednesday, Jun 17 | boxscore | SEA | @ | SDP | W | 4 | 3 | 32-33 | 3 | 5.5 | Olson | Gaudin | Aardsma | 2:37 | 20,224 | ++ | |
| 66 | 66 | Thursday, Jun 18 | boxscore | SEA | @ | SDP | L | 3 | 4 | 10 | 32-34 | 3 | 5.5 | Bell | Batista | 3:06 | 25,146 | - | |
| 67 | 67 | Friday, Jun 19 | boxscore | SEA | ARI | W | 4 | 3 | 33-34 | 3 | 4.5 | Batista | Pena | Aardsma | 2:44 | 27,326 | + | ||
| 68 | 68 | Saturday, Jun 20 | boxscore | SEA | ARI | W | 7 | 3 | 34-34 | 3 | 3.5 | Vargas | Buckner | Aardsma | 2:35 | 29,527 | ++ | ||
| 69 | 69 | Sunday, Jun 21 | boxscore | SEA | ARI | W | 3 | 2 | 35-34 | 3 | 2.5 | Lowe | Zavada | 3:09 | 37,240 | +++ | |||
| 70 | 70 | Tuesday, Jun 23 | boxscore | SEA | SDP | L | 7 | 9 | 35-35 | 3 | 2.5 | Gaudin | Olson | Bell | 2:52 | 23,543 | - | ||
| 71 | 71 | Wednesday, Jun 24 | boxscore | SEA | SDP | W | 4 | 3 | 36-35 | 3 | 2.5 | White | Mujica | Aardsma | 2:44 | 22,997 | + | ||
| 72 | 72 | Thursday, Jun 25 | boxscore | SEA | SDP | W | 9 | 3 | 37-35 | 3 | 2.5 | Washburn | LeBlanc | 2:59 | 27,990 | ++ | |||
| 73 | 73 | Friday, Jun 26 | boxscore | SEA | @ | LAD | L | 2 | 8 | 37-36 | 3 | 3.5 | Kershaw | Vargas | 2:39 | 50,746 | - | ||
| 74 | 74 | Saturday, Jun 27 | boxscore | SEA | @ | LAD | W | 5 | 1 | 38-36 | 3 | 3.0 | Hernandez | Milton | 2:48 | 50,847 | + | ||
| 75 | 75 | Sunday, Jun 28 | boxscore | SEA | @ | LAD | W | 4 | 2 | 39-36 | 3 | 3.0 | Olson | Kuroda | Aardsma | 2:49 | 49,355 | ++ | |
| 76 | 76 | Tuesday, Jun 30 | boxscore | SEA | @ | NYY | L | 5 | 8 | 39-37 | 3 | 3.5 | Bruney | White | Rivera | 3:16 | 46,181 | - | |
| 77 | 77 | Wednesday, Jul 1 | boxscore | SEA | @ | NYY | L | 2 | 4 | 39-38 | 3 | 3.5 | Pettitte | Washburn | Rivera | 2:17 | 45,285 | -- | |
| 78 | 78 | Thursday, Jul 2 | boxscore | SEA | @ | NYY | W | 8 | 4 | 40-38 | 3 | 3.5 | Batista | Sabathia | 3:04 | 46,142 | + | ||
| 79 | 79 | Friday, Jul 3 | boxscore | SEA | @ | BOS | W | 7 | 6 | 11 | 41-38 | 3 | 2.5 | Jakubauskas | Ramirez | Lowe | 3:09 | 38,078 | ++ |
| 80 | 80 | Saturday, Jul 4 | boxscore | SEA | @ | BOS | W | 3 | 2 | 42-38 | 3 | 2.5 | Corcoran | Saito | Aardsma | 3:06 | 37,656 | +++ | |
| 81 | 81 | Sunday, Jul 5 | boxscore | SEA | @ | BOS | L | 4 | 8 | 42-39 | 3 | 3.5 | Masterson | Batista | 2:57 | 37,691 | - | ||
| 82 | 82 | Monday, Jul 6 | boxscore | SEA | BAL | W | 5 | 0 | 43-39 | 3 | 3.5 | Washburn | Bergesen | 2:09 | 24,080 | + | |||
| 83 | 83 | Tuesday, Jul 7 | boxscore | SEA | BAL | L | 4 | 12 | 43-40 | 3 | 3.5 | Hendrickson | Jakubauskas | 3:01 | 19,344 | - | |||
| 84 | 84 | Wednesday, Jul 8 | boxscore | SEA | BAL | L | 3 | 5 | 43-41 | 3 | 4.5 | Bass | Aardsma | Sherrill | 3:03 | 27,045 | -- | ||
| 85 | 85 | Thursday, Jul 9 | boxscore | SEA | TEX | W | 3 | 1 | 44-41 | 3 | 3.5 | Hernandez | Wilson | Aardsma | 2:19 | 24,814 | + | ||
| 86 | 86 | Friday, Jul 10 | boxscore | SEA | TEX | L | 4 | 6 | 44-42 | 3 | 4.5 | Feldman | Morrow | Francisco | 2:41 | 34,874 | - | ||
| 87 | 87 | Saturday, Jul 11 | boxscore | SEA | TEX | W | 4 | 1 | 45-42 | 3 | 4.0 | Washburn | Millwood | Aardsma | 2:33 | 30,701 | + | ||
| 88 | 88 | Sunday, Jul 12 | boxscore | SEA | TEX | W | 5 | 3 | 46-42 | 3 | 4.0 | Batista | O'Day | Aardsma | 2:51 | 33,225 | ++ | ||
| 89 | 89 | Thursday, Jul 16 | boxscore | SEA | @ | CLE | L | 1 | 4 | 46-43 | 3 | 5.0 | Lee | Olson | 2:35 | 22,371 | - | ||
| 90 | 90 | Friday, Jul 17 | boxscore | SEA | @ | CLE | W | 6 | 2 | 47-43 | 3 | 4.0 | Hernandez | Huff | 2:35 | 23,545 | + | ||
| 91 | 91 | Saturday, Jul 18 | boxscore | SEA | @ | CLE | W | 3 | 1 | 48-43 | 3 | 4.0 | Washburn | Ohka | Aardsma | 2:32 | 24,893 | ++ | |
| 92 | 92 | Sunday, Jul 19 | boxscore | SEA | @ | CLE | W | 5 | 3 | 49-43 | 3 | 4.0 | Kelley | Betancourt | Aardsma | 3:22 | 20,900 | +++ | |
| 93 | 93 | Tuesday, Jul 21 | boxscore | SEA | @ | DET | L | 7 | 9 | 49-44 | 3 | 5.5 | Porcello | Olson | Rodney | 2:59 | 32,906 | - | |
| 94 | 94 | Wednesday, Jul 22 | boxscore | SEA | @ | DET | W | 2 | 1 | 50-44 | 3 | 5.5 | Hernandez | Seay | Aardsma | 2:26 | 29,758 | + | |
| 95 | 95 | Thursday, Jul 23 | boxscore | SEA | @ | DET | W | 2 | 1 | 51-44 | 3 | 5.5 | Washburn | French | Aardsma | 2:28 | 32,177 | ++ | |
| 96 | 96 | Friday, Jul 24 | boxscore | SEA | CLE | L | 0 | 9 | 51-45 | 3 | 6.5 | Laffey | Rowland-Smith | 2:29 | 34,802 | - | |||
| 97 | 97 | Saturday, Jul 25 | boxscore | SEA | CLE | L | 3 | 10 | 51-46 | 3 | 7.5 | Sowers | Bedard | 3:13 | 29,213 | -- | |||
| 98 | 98 | Sunday, Jul 26 | boxscore | SEA | CLE | L | 3 | 12 | 51-47 | 3 | 7.5 | Lee | Vargas | 2:54 | 30,229 | --- | |||
| 99 | 99 | Monday, Jul 27 | boxscore | SEA | TOR | L | 4 | 11 | 51-48 | 3 | 7.5 | Romero | Hernandez | 2:53 | 28,694 | ---- | |||
| 100 | 100 | Tuesday, Jul 28 | boxscore | SEA | TOR | W | 4 | 3 | 52-48 | 3 | 7.5 | Aardsma | Downs | 2:49 | 26,152 | + | |||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 101 | 101 | Wednesday, Jul 29 | boxscore | SEA | TOR | W | 3 | 2 | 53-48 | 3 | 7.5 | Rowland-Smith | Halladay | Aardsma | 2:14 | 32,655 | ++ | ||
| 102 | 102 | Thursday, Jul 30 | boxscore | SEA | @ | TEX | L | 1 | 7 | 53-49 | 3 | 8.0 | Holland | Olson | 2:20 | 23,949 | - | ||
| 103 | 103 | Friday, Jul 31 | boxscore | SEA | @ | TEX | L | 4 | 5 | 53-50 | 3 | 9.0 | Padilla | Vargas | Wilson | 2:10 | 36,901 | -- | |
| 104 | 104 | Saturday, Aug 1 | boxscore | SEA | @ | TEX | W | 7 | 2 | 54-50 | 3 | 9.0 | Hernandez | Hunter | 3:02 | 29,458 | + | ||
| 105 | 105 | Sunday, Aug 2 | boxscore | SEA | @ | TEX | L | 2 | 4 | 54-51 | 3 | 10.0 | Feldman | White | Wilson | 2:14 | 28,670 | - | |
| 106 | 106 | Tuesday, Aug 4 | boxscore | SEA | @ | KCR | W | 7 | 6 | 55-51 | 3 | 9.0 | Kelley | Wright | Aardsma | 3:37 | 15,057 | + | |
| 107 | 107 | Wednesday, Aug 5 | boxscore | SEA | @ | KCR | W | 11 | 6 | 56-51 | 3 | 8.0 | French | Davies | 3:19 | 27,805 | ++ | ||
| 108 | 108 | Thursday, Aug 6 | boxscore | SEA | @ | KCR | L | 2 | 8 | 56-52 | 3 | 9.0 | Chen | Vargas | 2:28 | 15,103 | - | ||
| 109 | 109 | Friday, Aug 7 | boxscore | SEA | TBR | W | 7 | 6 | 11 | 57-52 | 3 | 8.0 | Kelley | Howell | 3:45 | 44,378 | + | ||
| 110 | 110 | Saturday, Aug 8 | boxscore | SEA | TBR | L | 4 | 10 | 57-53 | 3 | 9.0 | Shields | Jakubauskas | 3:08 | 28,239 | - | |||
| 111 | 111 | Sunday, Aug 9 | boxscore | SEA | TBR | W | 11 | 2 | 58-53 | 3 | 8.0 | Rowland-Smith | Kazmir | 2:39 | 28,490 | + | |||
| 112 | 112 | Monday, Aug 10 | boxscore | SEA | CHW | W | 6 | 4 | 59-53 | 3 | 8.0 | White | Floyd | Aardsma | 2:42 | 21,049 | ++ | ||
| 113 | 113 | Tuesday, Aug 11 | boxscore | SEA | CHW | L | 1 | 3 | 59-54 | 3 | 9.0 | Danks | Aardsma | Jenks | 2:24 | 19,385 | - | ||
| 114 | 114 | Wednesday, Aug 12 | boxscore | SEA | CHW | W | 1 | 0 | 14 | 60-54 | 3 | 9.0 | Jakubauskas | Pena | 3:52 | 24,427 | + | ||
| 115 | 115 | Thursday, Aug 13 | boxscore | SEA | NYY | L | 1 | 11 | 60-55 | 3 | 9.5 | Sabathia | Snell | 2:42 | 33,585 | - | |||
| 116 | 116 | Friday, Aug 14 | boxscore | SEA | NYY | L | 2 | 4 | 60-56 | 3 | 9.5 | Hughes | Lowe | Rivera | 2:53 | 36,769 | -- | ||
| 117 | 117 | Saturday, Aug 15 | boxscore | SEA | NYY | L | 2 | 5 | 60-57 | 3 | 10.5 | Mitre | French | Rivera | 3:00 | 44,272 | --- | ||
| 118 | 118 | Sunday, Aug 16 | boxscore | SEA | NYY | W | 10 | 3 | 61-57 | 3 | 10.5 | Fister | Chamberlain | 2:52 | 45,210 | + | |||
| 119 | 119 | Tuesday, Aug 18 | boxscore | SEA | @ | DET | L | 3 | 5 | 61-58 | 3 | 12.0 | Seay | Lowe | Rodney | 2:51 | 33,710 | - | |
| 120 | 120 | Wednesday, Aug 19 | boxscore | SEA | @ | DET | W | 3 | 1 | 62-58 | 3 | 12.0 | Snell | Verlander | Aardsma | 2:35 | 33,194 | + | |
| 121 | 121 | Thursday, Aug 20 | boxscore | SEA | @ | DET | L | 6 | 7 | 62-59 | 3 | 12.0 | Seay | Aardsma | 2:34 | 31,167 | - | ||
| 122 | 122 | Friday, Aug 21 | boxscore | SEA | @ | CLE | W | 9 | 4 | 63-59 | 3 | 11.0 | French | Huff | 2:51 | 28,503 | + | ||
| 123 | 123 | Saturday, Aug 22 | boxscore | SEA | @ | CLE | L | 3 | 4 | 11 | 63-60 | 3 | 12.0 | Perez | Messenger | 3:20 | 28,942 | - | |
| 124 | 124 | Sunday, Aug 23 | boxscore | SEA | @ | CLE | L | 1 | 6 | 63-61 | 3 | 12.0 | Carmona | Hernandez | 2:37 | 23,086 | -- | ||
| 125 | 125 | Monday, Aug 24 | boxscore | SEA | OAK | W | 3 | 1 | 64-61 | 3 | 11.0 | Snell | Mazzaro | Aardsma | 2:33 | 21,056 | + | ||
| 126 | 126 | Tuesday, Aug 25 | boxscore | SEA | OAK | W | 4 | 2 | 10 | 65-61 | 3 | 10.0 | Lowe | Breslow | 2:57 | 17,661 | ++ | ||
| 127 | 127 | Wednesday, Aug 26 | boxscore | SEA | OAK | W | 5 | 3 | 66-61 | 3 | 10.0 | French | Gonzalez | Aardsma | 2:40 | 18,695 | +++ | ||
| 128 | 128 | Thursday, Aug 27 | boxscore | SEA | KCR | L | 4 | 8 | 66-62 | 3 | 10.0 | Davies | Fister | 2:42 | 19,345 | - | |||
| 129 | 129 | Friday, Aug 28 | boxscore | SEA | KCR | W | 6 | 3 | 67-62 | 3 | 10.0 | Hernandez | Bannister | Aardsma | 2:32 | 26,714 | + | ||
| 130 | 130 | Saturday, Aug 29 | boxscore | SEA | KCR | W | 8 | 4 | 68-62 | 3 | 9.0 | Snell | Meche | 2:30 | 26,457 | ++ | |||
| 131 | 131 | Sunday, Aug 30 | boxscore | SEA | KCR | L | 0 | 3 | 68-63 | 3 | 10.0 | Greinke | Rowland-Smith | 2:06 | 30,286 | - | |||
| 132 | 132 | Monday, Aug 31 | boxscore | SEA | LAA | L | 0 | 10 | 68-64 | 3 | 11.0 | Saunders | French | 2:30 | 18,959 | -- | |||
| 133 | 133 | Tuesday, Sep 1 | boxscore | SEA | LAA | W | 2 | 1 | 69-64 | 3 | 10.0 | Fister | Oliver | Aardsma | 2:27 | 18,542 | + | ||
| 134 | 134 | Wednesday, Sep 2 | boxscore | SEA | LAA | W | 3 | 0 | 70-64 | 3 | 9.0 | Hernandez | Kazmir | Aardsma | 2:31 | 22,130 | ++ | ||
| 135 | 135 | Thursday, Sep 3 | boxscore | SEA | @ | OAK | W | 7 | 4 | 71-64 | 3 | 8.5 | Snell | Tomko | Aardsma | 2:47 | 10,297 | +++ | |
| 136 | 136 | Friday, Sep 4 | boxscore | SEA | @ | OAK | W | 6 | 3 | 72-64 | 3 | 8.5 | Rowland-Smith | Mortensen | Lowe | 2:25 | 11,738 | ++++ | |
| 137 | 137 | Saturday, Sep 5 | boxscore | SEA | @ | OAK | L | 5 | 9 | 72-65 | 3 | 9.5 | Anderson | French | Bailey | 2:58 | 16,495 | - | |
| 138 | 138 | Sunday, Sep 6 | boxscore | SEA | @ | OAK | L | 2 | 5 | 72-66 | 3 | 10.5 | Gonzalez | Kelley | Bailey | 2:20 | 16,188 | -- | |
| 139 | 139 | Tuesday, Sep 8 | boxscore | SEA | @ | LAA | L | 2 | 3 | 10 | 72-67 | 3 | 11.0 | Palmer | Batista | 3:14 | 37,725 | --- | |
| 140 | 140 | Wednesday, Sep 9 | boxscore | SEA | @ | LAA | L | 3 | 6 | 72-68 | 3 | 12.0 | Weaver | Snell | Fuentes | 2:44 | 36,340 | ---- | |
| 141 | 141 | Thursday, Sep 10 | boxscore | SEA | @ | LAA | L | 0 | 3 | 72-69 | 3 | 13.0 | Lackey | Rowland-Smith | 2:02 | 37,412 | ----- | ||
| 142 | 142 | Saturday, Sep 12 | boxscore | SEA | @ | TEX | W | 8 | 3 | 73-69 | 3 | 12.5 | Morrow | Millwood | 3:10 | 22,468 | + | ||
| 143 | 143 | Sunday, Sep 13 | boxscore | SEA | @ | TEX | L | 2 | 7 | 73-70 | 3 | 13.0 | Hunter | Fister | 2:18 | 0 | - | ||
| 144 | 144 | Sunday, Sep 13 | boxscore | SEA | @ | TEX | W | 5 | 0 | 74-70 | 3 | 13.0 | Hernandez | Holland | 2:29 | 18,522 | + | ||
| 145 | 145 | Tuesday, Sep 15 | boxscore | SEA | CHW | L | 3 | 6 | 74-71 | 3 | 12.5 | Garcia | Kelley | Jenks | 2:59 | 17,153 | - | ||
| 146 | 146 | Wednesday, Sep 16 | boxscore | SEA | CHW | W | 4 | 1 | 75-71 | 3 | 11.5 | Rowland-Smith | Floyd | Aardsma | 2:11 | 16,596 | + | ||
| 147 | 147 | Thursday, Sep 17 | boxscore | SEA | CHW | W | 4 | 3 | 14 | 76-71 | 3 | 11.5 | Kelley | Linebrink | 3:59 | 16,336 | ++ | ||
| 148 | 148 | Friday, Sep 18 | boxscore | SEA | NYY | W | 3 | 2 | 77-71 | 3 | 11.5 | Hernandez | Rivera | 2:32 | 28,395 | +++ | |||
| 149 | 149 | Saturday, Sep 19 | boxscore | SEA | NYY | L | 1 | 10 | 77-72 | 3 | 11.5 | Sabathia | Fister | 3:08 | 43,173 | - | |||
| 150 | 150 | Sunday, Sep 20 | boxscore | SEA | NYY | W | 7 | 1 | 78-72 | 3 | 11.5 | Snell | Chamberlain | 2:50 | 35,885 | + | |||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 151 | 151 | Tuesday, Sep 22 | boxscore | SEA | @ | TBR | W | 4 | 3 | 79-72 | 3 | 11.0 | Batista | Wheeler | Lowe | 2:52 | 12,514 | ++ | |
| 152 | 152 | Wednesday, Sep 23 | boxscore | SEA | @ | TBR | L | 4 | 5 | 79-73 | 3 | 11.0 | Springer | Lowe | Choate | 3:03 | 13,009 | - | |
| 153 | 153 | Thursday, Sep 24 | boxscore | SEA | @ | TOR | W | 5 | 4 | 80-73 | 3 | 10.5 | Hernandez | Carlson | Aardsma | 2:55 | 15,306 | + | |
| 154 | 154 | Friday, Sep 25 | boxscore | SEA | @ | TOR | L | 0 | 5 | 80-74 | 3 | 10.5 | Halladay | Fister | 2:11 | 20,668 | - | ||
| 155 | 155 | Saturday, Sep 26 | boxscore | SEA | @ | TOR | L | 4 | 5 | 10 | 80-75 | 3 | 10.5 | Frasor | Kelley | 3:11 | 29,783 | -- | |
| 156 | 156 | Sunday, Sep 27 | boxscore | SEA | @ | TOR | L | 4 | 5 | 80-76 | 3 | 11.5 | Wolfe | Rowland-Smith | Camp | 2:32 | 39,052 | --- | |
| 157 | 157 | Tuesday, Sep 29 | boxscore | SEA | OAK | W | 6 | 4 | 81-76 | 3 | 12.0 | Hernandez | Cahill | 2:44 | 18,167 | + | |||
| 158 | 158 | Wednesday, Sep 30 | boxscore | SEA | OAK | W | 7 | 0 | 82-76 | 3 | 12.0 | Morrow | Mortensen | 2:40 | 16,930 | ++ | |||
| 159 | 159 | Thursday, Oct 1 | boxscore | SEA | OAK | W | 4 | 2 | 83-76 | 3 | 11.0 | Fister | Anderson | Aardsma | 2:20 | 16,607 | +++ | ||
| 160 | 160 | Friday, Oct 2 | boxscore | SEA | TEX | L | 4 | 7 | 83-77 | 3 | 12.0 | Wilson | Aardsma | Francisco | 3:02 | 27,899 | - | ||
| 161 | 161 | Saturday, Oct 3 | boxscore | SEA | TEX | W | 2 | 1 | 84-77 | 3 | 12.0 | Rowland-Smith | Hunter | Batista | 2:27 | 24,391 | + | ||
| 162 | 162 | Sunday, Oct 4 | boxscore | SEA | TEX | W | 4 | 3 | 85-77 | 3 | 12.0 | Hernandez | Feldman | Aardsma | 2:24 | 32,260 | ++ | ||
| 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.
2008 Schedule, Box Scores and Splits