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| Season Summary | 93-69, Final Rank:2, GB: 3.0 | |
| Days in First | 119 | last on Tuesday, Aug 26, counts only the days a team played and was in first at the end of the day |
| 135 | last on Aug 26, counts all days of the season including off days | |
| Biggest Lead | 8 | last on Friday, Jun 13, for days on which they played |
| Farthest Behind | 6 | last on Wednesday, Sep 24, for days on which they played |
| Most Games over .500 | 27 | last on Tuesday, Aug 19 |
| Most Games under .500 | 2 | last on Friday, Apr 11 |
| Longest Winning Streak | 9 | Tuesday, May 27 to Thursday, Jun 5 |
| Longest Losing Streak | 6 | Wednesday, Aug 20 to Monday, Aug 25 |
| Most Runs Allowed | 16 | Thursday, May 8 |
| Most Runs Scored | 15 | Tuesday, May 27 |
| Longest Game (innings) | 13 | Sunday, Apr 13 and Friday, Sep 5 |
| Times Shutout by Opponent | 10 | |
| Times Opponent Shutout | 15 | |
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| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Tuesday, Apr 1 | boxscore | SEA | @ | OAK | L | 0 | 5 | 0-1 | 4 | 1.0 | Hudson | Garcia | 2:39 | 41,723 | - | ||
| 2 | 2 | Wednesday, Apr 2 | boxscore | SEA | @ | OAK | L | 3 | 8 | 0-2 | 4 | 2.0 | Zito | Moyer | 2:58 | 17,033 | -- | ||
| 3 | 3 | Thursday, Apr 3 | boxscore | SEA | @ | OAK | W | 7 | 6 | 11 | 1-2 | 3 | 1.0 | Nelson | Rincon | 3:42 | 6,295 | + | |
| 4 | 4 | Friday, Apr 4 | boxscore | SEA | @ | TEX | W | 6 | 4 | 2-2 | 2 | 1.0 | Franklin | Cordero | Sasaki | 2:59 | 49,231 | ++ | |
| 5 | 5 | Saturday, Apr 5 | boxscore | SEA | @ | TEX | L | 4 | 8 | 2-3 | 2 | 2.0 | Lewis | Meche | Urbina | 2:55 | 25,562 | - | |
| 6 | 6 | Sunday, Apr 6 | boxscore | SEA | @ | TEX | W | 11 | 2 | 3-3 | 2 | 2.0 | Garcia | Park | 3:13 | 26,336 | + | ||
| 7 | 7 | Tuesday, Apr 8 | boxscore | SEA | ANA | W | 5 | 0 | 4-3 | 2 | 2.0 | Moyer | Ortiz | 2:41 | 45,931 | ++ | |||
| 8 | 8 | Wednesday, Apr 9 | boxscore | SEA | ANA | L | 1 | 5 | 4-4 | 2 | 3.0 | Appier | Pineiro | 2:47 | 35,492 | - | |||
| 9 | 9 | Thursday, Apr 10 | boxscore | SEA | ANA | L | 0 | 3 | 4-5 | 2 | 3.0 | Washburn | Franklin | Percival | 2:20 | 32,746 | -- | ||
| 10 | 10 | Friday, Apr 11 | boxscore | SEA | TEX | L | 2 | 4 | 4-6 | 3 | 3.0 | Park | Garcia | Urbina | 3:22 | 37,784 | --- | ||
| 11 | 11 | Saturday, Apr 12 | boxscore | SEA | TEX | W | 13 | 4 | 5-6 | 3 | 2.0 | Meche | Drese | 3:17 | 36,591 | + | |||
| 12 | 12 | Sunday, Apr 13 | boxscore | SEA | TEX | W | 4 | 3 | 13 | 6-6 | 3 | 1.0 | Sasaki | Dickey | 4:02 | 35,496 | ++ | ||
| 13 | 13 | Monday, Apr 14 | boxscore | SEA | OAK | W | 4 | 3 | 7-6 | 1 | Tied | Pineiro | Mulder | Sasaki | 2:22 | 26,567 | +++ | ||
| 14 | 14 | Tuesday, Apr 15 | boxscore | SEA | OAK | W | 5 | 3 | 8-6 | 1 | up 1.0 | Rhodes | Bowie | Sasaki | 2:52 | 26,666 | ++++ | ||
| 15 | 15 | Wednesday, Apr 16 | boxscore | SEA | OAK | L | 1 | 4 | 8-7 | 1 | Tied | Hudson | Garcia | Foulke | 2:37 | 29,674 | - | ||
| 16 | 16 | Thursday, Apr 17 | boxscore | SEA | OAK | W | 4 | 3 | 10 | 9-7 | 1 | up 1.0 | Nelson | Fikac | 3:27 | 33,412 | + | ||
| 17 | 17 | Friday, Apr 18 | boxscore | SEA | @ | ANA | W | 8 | 2 | 10-7 | 1 | up 1.0 | Moyer | Ortiz | 3:01 | 34,658 | ++ | ||
| 18 | 18 | Saturday, Apr 19 | boxscore | SEA | @ | ANA | L | 6 | 7 | 10-8 | 1 | Tied | Rodriguez | Sasaki | 3:14 | 43,536 | - | ||
| 19 | 19 | Sunday, Apr 20 | boxscore | SEA | @ | ANA | W | 7 | 6 | 11-8 | 1 | up 1.0 | Hasegawa | Percival | Sasaki | 3:30 | 28,942 | + | |
| 20 | 20 | Tuesday, Apr 22 | boxscore | SEA | CLE | W | 8 | 5 | 12-8 | 1 | up 1.0 | Carrara | Baez | 3:13 | 25,231 | ++ | |||
| 21 | 21 | Wednesday, Apr 23 | boxscore | SEA | CLE | W | 4 | 0 | 13-8 | 1 | up 2.0 | Meche | Rodriguez | 2:04 | 26,036 | +++ | |||
| 22 | 22 | Thursday, Apr 24 | boxscore | SEA | CLE | W | 4 | 2 | 14-8 | 1 | up 2.0 | Moyer | Traber | Nelson | 2:47 | 26,263 | ++++ | ||
| 23 | 23 | Friday, Apr 25 | boxscore | SEA | DET | W | 6 | 0 | 15-8 | 1 | up 2.0 | Pineiro | Maroth | 2:42 | 33,458 | +++++ | |||
| 24 | 24 | Saturday, Apr 26 | boxscore | SEA | DET | L | 4 | 6 | 15-9 | 1 | up 1.0 | Walker | Franklin | Anderson | 3:06 | 36,258 | - | ||
| 25 | 25 | Sunday, Apr 27 | boxscore | SEA | DET | W | 4 | 3 | 16-9 | 1 | up 1.0 | Garcia | Bernero | Nelson | 2:11 | 39,678 | + | ||
| 26 | 26 | Tuesday, Apr 29 | boxscore | SEA | @ | NYY | W | 6 | 0 | 17-9 | 1 | up 1.0 | Meche | Clemens | 2:38 | 38,724 | ++ | ||
| 27 | 27 | Wednesday, Apr 30 | boxscore | SEA | @ | NYY | L | 5 | 8 | 17-10 | 1 | Tied | Pettitte | Moyer | 3:13 | 30,522 | - | ||
| 28 | 28 | Thursday, May 1 | boxscore | SEA | @ | NYY | L | 1 | 2 | 17-11 | 1 | Tied | Mussina | Pineiro | Rivera | 2:33 | 34,991 | -- | |
| 29 | 29 | Friday, May 2 | boxscore | SEA | @ | CHW | W | 9 | 2 | 18-11 | 1 | up 1.0 | Franklin | Loaiza | 2:39 | 13,355 | + | ||
| 30 | 30 | Saturday, May 3 | boxscore | SEA | @ | CHW | W | 12 | 2 | 19-11 | 1 | up 1.0 | Garcia | Stewart | 3:16 | 25,837 | ++ | ||
| 31 | 31 | Sunday, May 4 | boxscore | SEA | @ | CHW | W | 5 | 1 | 6 | 20-11 | 1 | up 1.0 | Meche | Colon | 1:21 | 15,413 | +++ | |
| 32 | 32 | Tuesday, May 6 | boxscore | SEA | NYY | W | 12 | 7 | 21-11 | 1 | up 1.0 | Moyer | Pettitte | 3:34 | 44,979 | ++++ | |||
| 33 | 33 | Wednesday, May 7 | boxscore | SEA | NYY | L | 2 | 7 | 21-12 | 1 | up 1.0 | Mussina | Pineiro | 2:55 | 43,753 | - | |||
| 34 | 34 | Thursday, May 8 | boxscore | SEA | NYY | L | 5 | 16 | 21-13 | 1 | Tied | Wells | Garcia | 3:07 | 46,000 | -- | |||
| 35 | 35 | Friday, May 9 | boxscore | SEA | CHW | W | 6 | 3 | 22-13 | 1 | Tied | Franklin | Wright | Nelson | 2:43 | 38,749 | + | ||
| 36 | 36 | Saturday, May 10 | boxscore | SEA | CHW | L | 3 | 4 | 22-14 | 1 | Tied | Colon | Meche | Marte | 2:34 | 43,123 | - | ||
| 37 | 37 | Sunday, May 11 | boxscore | SEA | CHW | W | 7 | 2 | 23-14 | 1 | Tied | Moyer | Buehrle | 2:40 | 45,383 | + | |||
| 38 | 38 | Tuesday, May 13 | boxscore | SEA | @ | CLE | W | 8 | 3 | 24-14 | 1 | Tied | Pineiro | Anderson | 2:50 | 16,721 | ++ | ||
| 39 | 39 | Wednesday, May 14 | boxscore | SEA | @ | CLE | L | 2 | 7 | 24-15 | 1 | Tied | Davis | Garcia | 2:29 | 17,324 | - | ||
| 40 | 40 | Thursday, May 15 | boxscore | SEA | @ | CLE | W | 9 | 1 | 25-15 | 1 | Tied | Carrara | Westbrook | 2:50 | 17,889 | + | ||
| 41 | 41 | Friday, May 16 | boxscore | SEA | @ | DET | W | 6 | 3 | 26-15 | 1 | up 1.0 | Meche | Bonderman | Sasaki | 2:58 | 17,641 | ++ | |
| 42 | 42 | Saturday, May 17 | boxscore | SEA | @ | DET | W | 6 | 3 | 27-15 | 1 | up 2.0 | Moyer | Cornejo | Sasaki | 2:49 | 23,274 | +++ | |
| 43 | 43 | Sunday, May 18 | boxscore | SEA | @ | DET | W | 6 | 2 | 28-15 | 1 | up 2.0 | Pineiro | Maroth | 2:15 | 16,263 | ++++ | ||
| 44 | 44 | Tuesday, May 20 | boxscore | SEA | KCR | W | 7 | 4 | 29-15 | 1 | up 2.0 | Nelson | Carrasco | 2:38 | 36,423 | +++++ | |||
| 45 | 45 | Wednesday, May 21 | boxscore | SEA | KCR | L | 5 | 14 | 29-16 | 1 | up 2.0 | George | Garcia | 2:51 | 31,251 | - | |||
| 46 | 46 | Thursday, May 22 | boxscore | SEA | KCR | W | 5 | 1 | 30-16 | 1 | up 3.0 | Meche | Affeldt | 2:38 | 38,322 | + | |||
| 47 | 47 | Friday, May 23 | boxscore | SEA | MIN | W | 5 | 2 | 31-16 | 1 | up 3.0 | Moyer | Radke | Sasaki | 2:50 | 40,258 | ++ | ||
| 48 | 48 | Saturday, May 24 | boxscore | SEA | MIN | L | 2 | 7 | 31-17 | 1 | up 3.0 | Lohse | Pineiro | 2:42 | 45,306 | - | |||
| 49 | 49 | Sunday, May 25 | boxscore | SEA | MIN | L | 1 | 3 | 31-18 | 1 | up 2.0 | Reed | Franklin | Guardado | 2:49 | 45,213 | -- | ||
| 50 | 50 | Tuesday, May 27 | boxscore | SEA | @ | KCR | W | 15 | 7 | 32-18 | 1 | up 3.0 | Garcia | George | 2:58 | 14,154 | + | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 51 | 51 | Wednesday, May 28 | boxscore | SEA | @ | KCR | W | 5 | 2 | 33-18 | 1 | up 4.0 | Moyer | Affeldt | Sasaki | 2:35 | 14,928 | ++ | |
| 52 | 52 | Thursday, May 29 | boxscore | SEA | @ | MIN | W | 10 | 6 | 34-18 | 1 | up 4.0 | Meche | Radke | 2:48 | 16,409 | +++ | ||
| 53 | 53 | Friday, May 30 | boxscore | SEA | @ | MIN | W | 6 | 0 | 35-18 | 1 | up 5.0 | Pineiro | Lohse | 2:20 | 30,179 | ++++ | ||
| 54 | 54 | Saturday, May 31 | boxscore | SEA | @ | MIN | W | 5 | 2 | 36-18 | 1 | up 5.0 | Franklin | Reed | Sasaki | 2:25 | 22,995 | +++++ | |
| 55 | 55 | Sunday, Jun 1 | boxscore | SEA | @ | MIN | W | 9 | 5 | 37-18 | 1 | up 5.0 | Garcia | Rogers | 2:36 | 18,754 | ++++++ | ||
| 56 | 56 | Tuesday, Jun 3 | boxscore | SEA | @ | PHI | W | 4 | 0 | 38-18 | 1 | up 6.0 | Moyer | Millwood | 2:57 | 18,029 | +++++++ | ||
| 57 | 57 | Wednesday, Jun 4 | boxscore | SEA | @ | PHI | W | 7 | 2 | 39-18 | 1 | up 6.0 | Meche | Padilla | 2:54 | 16,232 | ++++++++ | ||
| 58 | 58 | Thursday, Jun 5 | boxscore | SEA | @ | PHI | W | 5 | 4 | 40-18 | 1 | up 7.0 | Mateo | Mesa | Sasaki | 2:47 | 21,145 | +++++++++ | |
| 59 | 59 | Friday, Jun 6 | boxscore | SEA | @ | NYM | L | 2 | 3 | 40-19 | 1 | up 6.0 | Seo | Franklin | Benitez | 2:28 | 26,684 | - | |
| 60 | 60 | Sunday, Jun 8 | boxscore | SEA | @ | NYM | W | 13 | 1 | 41-19 | 1 | up 8.0 | Garcia | Leiter | 2:26 | 0 | + | ||
| 61 | 61 | Sunday, Jun 8 | boxscore | SEA | @ | NYM | W | 7 | 0 | 42-19 | 1 | up 8.0 | Moyer | Bacsik | 2:26 | 39,820 | ++ | ||
| 62 | 62 | Tuesday, Jun 10 | boxscore | SEA | MON | L | 3 | 7 | 42-20 | 1 | up 7.0 | Vazquez | Meche | Ayala | 2:56 | 34,811 | - | ||
| 63 | 63 | Wednesday, Jun 11 | boxscore | SEA | MON | L | 1 | 3 | 42-21 | 1 | up 7.0 | Hernandez | Pineiro | Biddle | 2:39 | 32,853 | -- | ||
| 64 | 64 | Thursday, Jun 12 | boxscore | SEA | MON | W | 1 | 0 | 43-21 | 1 | up 8.0 | Franklin | Vargas | Rhodes | 2:37 | 33,761 | + | ||
| 65 | 65 | Friday, Jun 13 | boxscore | SEA | ATL | W | 2 | 1 | 44-21 | 1 | up 8.0 | Garcia | Ortiz | Nelson | 2:46 | 45,791 | ++ | ||
| 66 | 66 | Saturday, Jun 14 | boxscore | SEA | ATL | L | 1 | 3 | 44-22 | 1 | up 7.0 | Hampton | Moyer | Smoltz | 3:06 | 45,971 | - | ||
| 67 | 67 | Sunday, Jun 15 | boxscore | SEA | ATL | W | 2 | 1 | 45-22 | 1 | up 7.0 | Meche | Maddux | Nelson | 2:28 | 45,732 | + | ||
| 68 | 68 | Monday, Jun 16 | boxscore | SEA | ANA | W | 6 | 3 | 46-22 | 1 | up 7.5 | Pineiro | Lackey | Rhodes | 2:28 | 41,599 | ++ | ||
| 69 | 69 | Tuesday, Jun 17 | boxscore | SEA | ANA | W | 8 | 4 | 47-22 | 1 | up 7.5 | Franklin | Appier | 2:30 | 39,054 | +++ | |||
| 70 | 70 | Wednesday, Jun 18 | boxscore | SEA | ANA | W | 2 | 0 | 48-22 | 1 | up 7.5 | Garcia | Sele | Rhodes | 2:51 | 43,473 | ++++ | ||
| 71 | 71 | Thursday, Jun 19 | boxscore | SEA | ANA | L | 0 | 2 | 48-23 | 1 | up 6.5 | Ortiz | Moyer | Percival | 2:36 | 45,758 | - | ||
| 72 | 72 | Friday, Jun 20 | boxscore | SEA | @ | SDP | L | 3 | 5 | 48-24 | 1 | up 5.5 | Matthews | Nelson | 2:46 | 23,500 | -- | ||
| 73 | 73 | Saturday, Jun 21 | boxscore | SEA | @ | SDP | W | 4 | 2 | 49-24 | 1 | up 6.5 | Pineiro | Eaton | Hasegawa | 2:51 | 38,243 | + | |
| 74 | 74 | Sunday, Jun 22 | boxscore | SEA | @ | SDP | L | 1 | 3 | 49-25 | 1 | up 5.5 | Peavy | Franklin | Beck | 2:42 | 27,163 | - | |
| 75 | 75 | Tuesday, Jun 24 | boxscore | SEA | @ | ANA | W | 6 | 4 | 50-25 | 1 | up 6.0 | Garcia | Sele | Nelson | 2:46 | 39,121 | + | |
| 76 | 76 | Wednesday, Jun 25 | boxscore | SEA | @ | ANA | L | 3 | 6 | 50-26 | 1 | up 6.0 | Ortiz | Moyer | Percival | 3:00 | 40,651 | - | |
| 77 | 77 | Thursday, Jun 26 | boxscore | SEA | @ | ANA | W | 10 | 6 | 51-26 | 1 | up 6.0 | Meche | Washburn | Hasegawa | 2:57 | 32,889 | + | |
| 78 | 78 | Friday, Jun 27 | boxscore | SEA | SDP | W | 8 | 2 | 52-26 | 1 | up 7.0 | Pineiro | Eaton | 2:50 | 45,529 | ++ | |||
| 79 | 79 | Saturday, Jun 28 | boxscore | SEA | SDP | L | 0 | 6 | 52-27 | 1 | up 7.0 | Peavy | Franklin | 2:37 | 45,326 | - | |||
| 80 | 80 | Sunday, Jun 29 | boxscore | SEA | SDP | L | 6 | 8 | 52-28 | 1 | up 6.0 | Beck | Rhodes | Witasick | 3:28 | 45,641 | -- | ||
| 81 | 81 | Monday, Jun 30 | boxscore | SEA | @ | OAK | W | 3 | 1 | 53-28 | 1 | up 7.0 | Moyer | Harang | Nelson | 2:27 | 24,831 | + | |
| 82 | 82 | Tuesday, Jul 1 | boxscore | SEA | @ | OAK | L | 2 | 3 | 11 | 53-29 | 1 | up 6.0 | Foulke | Nelson | 3:20 | 20,233 | - | |
| 83 | 83 | Wednesday, Jul 2 | boxscore | SEA | @ | OAK | W | 13 | 0 | 54-29 | 1 | up 7.0 | Pineiro | Lilly | 3:02 | 33,420 | + | ||
| 84 | 84 | Thursday, Jul 3 | boxscore | SEA | @ | OAK | L | 2 | 5 | 54-30 | 1 | up 6.0 | Zito | Franklin | Foulke | 2:43 | 19,612 | - | |
| 85 | 85 | Friday, Jul 4 | boxscore | SEA | @ | TEX | L | 3 | 7 | 54-31 | 1 | up 6.0 | Dickey | Garcia | Urbina | 2:50 | 49,530 | -- | |
| 86 | 86 | Saturday, Jul 5 | boxscore | SEA | @ | TEX | W | 3 | 2 | 10 | 55-31 | 1 | up 7.0 | Soriano | Urbina | Hasegawa | 3:01 | 31,332 | + |
| 87 | 87 | Sunday, Jul 6 | boxscore | SEA | @ | TEX | L | 1 | 5 | 55-32 | 1 | up 6.0 | Valdez | Meche | 2:33 | 18,114 | - | ||
| 88 | 88 | Tuesday, Jul 8 | boxscore | SEA | BAL | W | 6 | 5 | 56-32 | 1 | up 7.0 | Pineiro | Johnson | Hasegawa | 3:26 | 37,327 | + | ||
| 89 | 89 | Wednesday, Jul 9 | boxscore | SEA | BAL | L | 2 | 7 | 56-33 | 1 | up 6.0 | Helling | Franklin | 2:47 | 39,563 | - | |||
| 90 | 90 | Thursday, Jul 10 | boxscore | SEA | BAL | L | 1 | 4 | 56-34 | 1 | up 5.0 | Ponson | Garcia | 2:28 | 35,801 | -- | |||
| 91 | 91 | Friday, Jul 11 | boxscore | SEA | TBD | W | 4 | 3 | 57-34 | 1 | up 5.0 | Moyer | Harper | Hasegawa | 2:22 | 45,156 | + | ||
| 92 | 92 | Saturday, Jul 12 | boxscore | SEA | TBD | L | 5 | 6 | 57-35 | 1 | up 4.0 | Zambrano | Meche | Carter | 2:26 | 45,655 | - | ||
| 93 | 93 | Sunday, Jul 13 | boxscore | SEA | TBD | W | 13 | 2 | 58-35 | 1 | up 4.0 | Pineiro | Standridge | 2:46 | 45,602 | + | |||
| 94 | 94 | Thursday, Jul 17 | boxscore | SEA | @ | KCR | L | 1 | 7 | 58-36 | 1 | up 4.0 | Lima | Garcia | 2:52 | 22,481 | - | ||
| 95 | 95 | Friday, Jul 18 | boxscore | SEA | @ | KCR | W | 6 | 3 | 59-36 | 1 | up 5.0 | Rhodes | MacDougal | Hasegawa | 2:34 | 30,698 | + | |
| 96 | 96 | Saturday, Jul 19 | boxscore | SEA | @ | KCR | L | 1 | 5 | 59-37 | 1 | up 5.0 | May | Meche | 2:16 | 39,808 | - | ||
| 97 | 97 | Sunday, Jul 20 | boxscore | SEA | @ | KCR | L | 5 | 7 | 10 | 59-38 | 1 | up 5.0 | Wilson | Rhodes | 3:28 | 16,880 | -- | |
| 98 | 98 | Monday, Jul 21 | boxscore | SEA | @ | MIN | L | 4 | 5 | 59-39 | 1 | up 4.0 | Rincon | Rhodes | Guardado | 2:49 | 20,306 | --- | |
| 99 | 99 | Tuesday, Jul 22 | boxscore | SEA | @ | MIN | W | 10 | 8 | 60-39 | 1 | up 4.0 | Mateo | Mays | Hasegawa | 3:16 | 22,229 | + | |
| 100 | 100 | Wednesday, Jul 23 | boxscore | SEA | OAK | W | 6 | 0 | 61-39 | 1 | up 5.0 | Franklin | Zito | 2:24 | 41,959 | ++ | |||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 101 | 101 | Thursday, Jul 24 | boxscore | SEA | OAK | L | 0 | 3 | 61-40 | 1 | up 4.0 | Mulder | Meche | Foulke | 3:02 | 42,730 | - | ||
| 102 | 102 | Friday, Jul 25 | boxscore | SEA | TEX | W | 11 | 5 | 62-40 | 1 | up 4.0 | Moyer | Ellis | Soriano | 2:45 | 43,871 | + | ||
| 103 | 103 | Saturday, Jul 26 | boxscore | SEA | TEX | W | 4 | 0 | 63-40 | 1 | up 4.0 | Pineiro | Lewis | 2:19 | 45,934 | ++ | |||
| 104 | 104 | Sunday, Jul 27 | boxscore | SEA | TEX | L | 3 | 7 | 63-41 | 1 | up 3.0 | Thomson | Garcia | 2:53 | 45,355 | - | |||
| 105 | 105 | Monday, Jul 28 | boxscore | SEA | TEX | L | 1 | 10 | 63-42 | 1 | up 3.0 | Benoit | Franklin | 2:31 | 44,415 | -- | |||
| 106 | 106 | Tuesday, Jul 29 | boxscore | SEA | DET | W | 11 | 5 | 64-42 | 1 | up 3.0 | Meche | Roney | 2:33 | 30,732 | + | |||
| 107 | 107 | Wednesday, Jul 30 | boxscore | SEA | DET | W | 13 | 3 | 65-42 | 1 | up 4.0 | Moyer | Cornejo | 2:47 | 35,800 | ++ | |||
| 108 | 108 | Thursday, Jul 31 | boxscore | SEA | DET | W | 4 | 0 | 66-42 | 1 | up 4.0 | Pineiro | Ledezma | 2:27 | 43,596 | +++ | |||
| 109 | 109 | Friday, Aug 1 | boxscore | SEA | CHW | L | 1 | 12 | 66-43 | 1 | up 3.0 | Colon | Garcia | 2:52 | 39,337 | - | |||
| 110 | 110 | Saturday, Aug 2 | boxscore | SEA | CHW | W | 10 | 0 | 67-43 | 1 | up 4.0 | Franklin | Wright | 2:22 | 45,719 | + | |||
| 111 | 111 | Sunday, Aug 3 | boxscore | SEA | CHW | W | 8 | 2 | 68-43 | 1 | up 4.0 | Meche | Buehrle | 2:57 | 45,632 | ++ | |||
| 112 | 112 | Tuesday, Aug 5 | boxscore | SEA | @ | CLE | W | 2 | 1 | 69-43 | 1 | up 4.0 | Moyer | Sabathia | Hasegawa | 2:37 | 22,300 | +++ | |
| 113 | 113 | Wednesday, Aug 6 | boxscore | SEA | @ | CLE | L | 6 | 10 | 69-44 | 1 | up 3.0 | Westbrook | Pineiro | 2:43 | 23,282 | - | ||
| 114 | 114 | Thursday, Aug 7 | boxscore | SEA | @ | CLE | L | 0 | 3 | 69-45 | 1 | up 3.0 | Traber | Garcia | Baez | 2:17 | 21,141 | -- | |
| 115 | 115 | Friday, Aug 8 | boxscore | SEA | @ | NYY | L | 7 | 9 | 69-46 | 1 | up 3.0 | Hitchcock | Franklin | Rivera | 3:02 | 52,793 | --- | |
| 116 | 116 | Saturday, Aug 9 | boxscore | SEA | @ | NYY | W | 2 | 1 | 70-46 | 1 | up 3.0 | Meche | Pettitte | Hasegawa | 2:21 | 54,945 | + | |
| 117 | 117 | Sunday, Aug 10 | boxscore | SEA | @ | NYY | W | 8 | 6 | 71-46 | 1 | up 4.0 | Soriano | Osuna | Hasegawa | 3:50 | 54,828 | ++ | |
| 118 | 118 | Monday, Aug 11 | boxscore | SEA | TOR | L | 3 | 5 | 71-47 | 1 | up 3.0 | Hendrickson | Pineiro | Lopez | 2:47 | 44,922 | - | ||
| 119 | 119 | Tuesday, Aug 12 | boxscore | SEA | TOR | W | 3 | 1 | 72-47 | 1 | up 3.0 | Garcia | Halladay | Hasegawa | 2:12 | 37,018 | + | ||
| 120 | 120 | Wednesday, Aug 13 | boxscore | SEA | TOR | W | 13 | 6 | 73-47 | 1 | up 4.0 | Mateo | Kershner | 3:08 | 37,066 | ++ | |||
| 121 | 121 | Thursday, Aug 14 | boxscore | SEA | TOR | L | 2 | 5 | 73-48 | 1 | up 4.0 | Escobar | Meche | Lopez | 2:45 | 41,945 | - | ||
| 122 | 122 | Friday, Aug 15 | boxscore | SEA | BOS | W | 10 | 5 | 74-48 | 1 | up 5.0 | Mateo | Timlin | Hasegawa | 3:28 | 46,171 | + | ||
| 123 | 123 | Saturday, Aug 16 | boxscore | SEA | BOS | L | 1 | 5 | 74-49 | 1 | up 4.0 | Martinez | Pineiro | 3:00 | 46,100 | - | |||
| 124 | 124 | Sunday, Aug 17 | boxscore | SEA | BOS | W | 3 | 1 | 75-49 | 1 | up 4.0 | Garcia | Burkett | Hasegawa | 2:35 | 46,105 | + | ||
| 125 | 125 | Tuesday, Aug 19 | boxscore | SEA | @ | TOR | W | 9 | 1 | 76-49 | 1 | up 4.0 | Franklin | Escobar | 2:47 | 24,025 | ++ | ||
| 126 | 126 | Wednesday, Aug 20 | boxscore | SEA | @ | TOR | L | 2 | 5 | 76-50 | 1 | up 3.0 | Towers | Meche | 2:13 | 21,588 | - | ||
| 127 | 127 | Thursday, Aug 21 | boxscore | SEA | @ | TOR | L | 3 | 7 | 76-51 | 1 | up 3.0 | Hendrickson | Moyer | 2:58 | 20,111 | -- | ||
| 128 | 128 | Friday, Aug 22 | boxscore | SEA | @ | BOS | L | 4 | 6 | 76-52 | 1 | up 3.0 | Suppan | Pineiro | Kim | 3:13 | 34,379 | --- | |
| 129 | 129 | Saturday, Aug 23 | boxscore | SEA | @ | BOS | L | 6 | 7 | 10 | 76-53 | 1 | up 2.0 | Timlin | Sasaki | 3:47 | 34,488 | ---- | |
| 130 | 130 | Sunday, Aug 24 | boxscore | SEA | @ | BOS | L | 1 | 6 | 76-54 | 1 | up 1.0 | Lowe | Franklin | 2:41 | 34,344 | ----- | ||
| 131 | 131 | Monday, Aug 25 | boxscore | SEA | @ | BOS | L | 1 | 8 | 76-55 | 1 | Tied | Martinez | Meche | Arroyo | 2:50 | 33,007 | ------ | |
| 132 | 132 | Tuesday, Aug 26 | boxscore | SEA | TBD | W | 9 | 3 | 77-55 | 1 | Tied | Moyer | Zambrano | 2:58 | 43,287 | + | |||
| 133 | 133 | Wednesday, Aug 27 | boxscore | SEA | TBD | L | 4 | 8 | 77-56 | 2 | 1.0 | Waechter | Pineiro | 2:58 | 42,442 | - | |||
| 134 | 134 | Thursday, Aug 28 | boxscore | SEA | TBD | L | 2 | 3 | 77-57 | 2 | 2.0 | Harper | Hasegawa | Carter | 2:28 | 42,563 | -- | ||
| 135 | 135 | Friday, Aug 29 | boxscore | SEA | BAL | W | 3 | 2 | 78-57 | 2 | 2.0 | Soriano | Julio | 2:30 | 43,365 | + | |||
| 136 | 136 | Saturday, Aug 30 | boxscore | SEA | BAL | W | 13 | 1 | 79-57 | 2 | 2.0 | Meche | Moss | 2:52 | 45,618 | ++ | |||
| 137 | 137 | Sunday, Aug 31 | boxscore | SEA | BAL | W | 3 | 0 | 80-57 | 2 | 2.0 | Moyer | Johnson | Hasegawa | 2:50 | 45,760 | +++ | ||
| 138 | 138 | Tuesday, Sep 2 | boxscore | SEA | @ | TBD | W | 10 | 8 | 11 | 81-57 | 2 | 2.0 | Hasegawa | Carter | 4:21 | 8,237 | ++++ | |
| 139 | 139 | Wednesday, Sep 3 | boxscore | SEA | @ | TBD | L | 0 | 7 | 81-58 | 2 | 2.0 | Waechter | Garcia | 2:07 | 8,696 | - | ||
| 140 | 140 | Thursday, Sep 4 | boxscore | SEA | @ | TBD | L | 0 | 1 | 81-59 | 2 | 2.0 | Sosa | Franklin | 2:12 | 8,486 | -- | ||
| 141 | 141 | Friday, Sep 5 | boxscore | SEA | @ | BAL | W | 6 | 4 | 13 | 82-59 | 2 | 2.0 | Rhodes | Ligtenberg | 5:01 | 27,417 | + | |
| 142 | 142 | Saturday, Sep 6 | boxscore | SEA | @ | BAL | L | 1 | 3 | 82-60 | 2 | 2.0 | DuBose | Moyer | Julio | 2:39 | 43,793 | - | |
| 143 | 143 | Sunday, Sep 7 | boxscore | SEA | @ | BAL | L | 1 | 2 | 82-61 | 2 | 2.0 | Hentgen | Garcia | Julio | 2:29 | 36,897 | -- | |
| 144 | 144 | Tuesday, Sep 9 | boxscore | SEA | TEX | L | 4 | 5 | 10 | 82-62 | 2 | 2.5 | Mahay | Hasegawa | Cordero | 2:55 | 37,707 | --- | |
| 145 | 145 | Wednesday, Sep 10 | boxscore | SEA | TEX | W | 3 | 1 | 83-62 | 2 | 2.5 | Pineiro | Thomson | 2:13 | 36,450 | + | |||
| 146 | 146 | Thursday, Sep 11 | boxscore | SEA | TEX | W | 8 | 2 | 84-62 | 2 | 2.5 | Meche | Callaway | 2:42 | 35,729 | ++ | |||
| 147 | 147 | Friday, Sep 12 | boxscore | SEA | ANA | W | 7 | 4 | 85-62 | 2 | 2.5 | Moyer | Lackey | Hasegawa | 2:43 | 41,601 | +++ | ||
| 148 | 148 | Saturday, Sep 13 | boxscore | SEA | ANA | W | 5 | 1 | 86-62 | 2 | 2.5 | Garcia | Rodriguez | 2:37 | 45,552 | ++++ | |||
| 149 | 149 | Sunday, Sep 14 | boxscore | SEA | ANA | L | 1 | 2 | 86-63 | 2 | 3.5 | Gregg | Franklin | Percival | 2:46 | 45,861 | - | ||
| 150 | 150 | Monday, Sep 15 | boxscore | SEA | @ | TEX | L | 4 | 6 | 86-64 | 2 | 4.5 | Lewis | Pineiro | Cordero | 2:34 | 22,041 | -- | |
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 151 | 151 | Tuesday, Sep 16 | boxscore | SEA | @ | TEX | L | 5 | 10 | 86-65 | 2 | 4.5 | Thomson | Meche | 2:32 | 16,134 | --- | ||
| 152 | 152 | Wednesday, Sep 17 | boxscore | SEA | @ | TEX | W | 5 | 1 | 87-65 | 2 | 4.5 | Moyer | Drese | 2:32 | 21,016 | + | ||
| 153 | 153 | Thursday, Sep 18 | boxscore | SEA | @ | TEX | L | 1 | 2 | 10 | 87-66 | 2 | 5.0 | Cordero | Hasegawa | 2:42 | 16,231 | - | |
| 154 | 154 | Friday, Sep 19 | boxscore | SEA | @ | OAK | W | 6 | 1 | 88-66 | 2 | 4.0 | Franklin | Hudson | 2:49 | 41,035 | + | ||
| 155 | 155 | Saturday, Sep 20 | boxscore | SEA | @ | OAK | W | 9 | 3 | 89-66 | 2 | 3.0 | Pineiro | Duchscherer | 3:00 | 40,226 | ++ | ||
| 156 | 156 | Sunday, Sep 21 | boxscore | SEA | @ | OAK | L | 0 | 12 | 89-67 | 2 | 4.0 | Lilly | Meche | 2:59 | 40,643 | - | ||
| 157 | 157 | Monday, Sep 22 | boxscore | SEA | @ | ANA | W | 5 | 1 | 90-67 | 2 | 4.0 | Moyer | Washburn | 2:28 | 35,537 | + | ||
| 158 | 158 | Tuesday, Sep 23 | boxscore | SEA | @ | ANA | L | 1 | 2 | 11 | 90-68 | 2 | 5.0 | Rodriguez | Hasegawa | 3:11 | 37,645 | - | |
| 159 | 159 | Wednesday, Sep 24 | boxscore | SEA | @ | ANA | L | 0 | 4 | 90-69 | 2 | 6.0 | Lackey | Meche | 2:07 | 30,917 | -- | ||
| 160 | 160 | Friday, Sep 26 | boxscore | SEA | OAK | W | 9 | 3 | 91-69 | 2 | 5.0 | Pineiro | Wood | Mateo | 2:43 | 45,519 | + | ||
| 161 | 161 | Saturday, Sep 27 | boxscore | SEA | OAK | W | 7 | 4 | 92-69 | 2 | 4.0 | Franklin | Bradford | Hasegawa | 2:46 | 45,483 | ++ | ||
| 162 | 162 | Sunday, Sep 28 | boxscore | SEA | OAK | W | 9 | 3 | 93-69 | 2 | 3.0 | Moyer | Lilly | 3:00 | 45,719 | +++ | |||
| 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.