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| Season Summary | 64-98, Final Rank:6, GB: 44.0 | |
| Days in First | never | |
| Biggest Lead | never led | |
| Farthest Behind | 44 | last on Sunday, Oct 5, for days on which they played |
| Most Games over .500 | 4 | last on Sunday, Apr 20 |
| Most Games under .500 | 34 | last on Sunday, Oct 5 |
| Longest Winning Streak | 6 | Saturday, Apr 12 to Sunday, Apr 20 |
| Longest Losing Streak | 6 | Thursday, May 22 to Tuesday, May 27 and Friday, Jun 13 to Tuesday, Jun 17 |
| Most Runs Allowed | 12 | Friday, May 23 |
| Most Runs Scored | 16 | Friday, Aug 22 |
| Longest Game (innings) | 17 | Sunday, Apr 20 |
| Times Shutout by Opponent | 10 | |
| Times Opponent Shutout | 9 | |
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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 8 | boxscore | PIT | NYM | L | 2 | 4 | 0-1 | 3 | 1.0 | Gooden | Reuschel | 2:24 | 48,962 | - | |||
| 2 | 2 | Friday, Apr 11 | boxscore | PIT | CHC | L | 4 | 5 | 0-2 | 6 | 2.5 | Trout | McWilliams | Smith | 2:32 | 2,490 | -- | ||
| 3 | 3 | Saturday, Apr 12 | boxscore | PIT | CHC | W | 3 | 1 | 1-2 | 4 | 2.5 | Rhoden | Smith | Guante | 2:32 | 5,623 | + | ||
| 4 | 4 | Sunday, Apr 13 | boxscore | PIT | CHC | W | 8 | 0 | 2-2 | 3 | 1.5 | Reuschel | Sutcliffe | 2:36 | 9,337 | ++ | |||
| 5 | 5 | Monday, Apr 14 | boxscore | PIT | @ | PHI | W | 3 | 1 | 10 | 3-2 | 2 | 1.5 | Guante | Bedrosian | Winn | 2:51 | 16,200 | +++ |
| 6 | 6 | Friday, Apr 18 | boxscore | PIT | @ | CHC | W | 4 | 0 | 4-2 | 2 | 1.5 | Rhoden | Sutcliffe | 2:39 | 38,151 | ++++ | ||
| 7 | 7 | Saturday, Apr 19 | boxscore | PIT | @ | CHC | W | 14 | 8 | 5-2 | 2 | 1.5 | Reuschel | Sanderson | 3:02 | 26,932 | +++++ | ||
| 8 | 8 | Sunday, Apr 20 | boxscore | PIT | @ | CHC | W | 10 | 8 | 17 | 6-2 | 2 | 0.5 | Jones | DiPino | 6:09 | 18,508 | ++++++ | |
| 9 | 9 | Monday, Apr 21 | boxscore | PIT | @ | NYM | L | 5 | 6 | 6-3 | 2 | 1.0 | McDowell | Clements | 2:55 | 10,282 | - | ||
| 10 | 10 | Tuesday, Apr 22 | boxscore | PIT | @ | NYM | L | 1 | 7 | 6-4 | 3 | 1.0 | Ojeda | Kipper | 2:46 | 15,668 | -- | ||
| 11 | 11 | Thursday, Apr 24 | boxscore | PIT | PHI | L | 2 | 4 | 6-5 | 3 | 2.0 | Rawley | Rhoden | 2:36 | 14,622 | --- | |||
| 12 | 12 | Friday, Apr 25 | boxscore | PIT | PHI | L | 3 | 6 | 6-6 | 3 | 3.0 | Gross | Reuschel | Bedrosian | 2:48 | 11,847 | ---- | ||
| 13 | 13 | Saturday, Apr 26 | boxscore | PIT | PHI | L | 5 | 6 | 6-7 | 4 | 4.0 | Hudson | McWilliams | Bedrosian | 2:50 | 16,373 | ----- | ||
| 14 | 14 | Sunday, Apr 27 | boxscore | PIT | PHI | W | 13 | 5 | 7-7 | 2 | 4.0 | Bielecki | Carlton | Walk | 2:45 | 17,218 | + | ||
| 15 | 15 | Monday, Apr 28 | boxscore | PIT | @ | LAD | L | 1 | 2 | 7-8 | 3 | 4.5 | Valenzuela | Kipper | 2:18 | 50,401 | - | ||
| 16 | 16 | Tuesday, Apr 29 | boxscore | PIT | @ | LAD | L | 4 | 5 | 7-9 | 5 | 5.5 | Hershiser | Patterson | Howell | 2:36 | 30,342 | -- | |
| 17 | 17 | Wednesday, Apr 30 | boxscore | PIT | @ | SFG | L | 5 | 6 | 12 | 7-10 | 5 | 6.5 | Garrelts | Patterson | 4:05 | 5,147 | --- | |
| 18 | 18 | Thursday, May 1 | boxscore | PIT | @ | SFG | W | 6 | 2 | 8-10 | 4 | 5.5 | Walk | Krukow | 2:46 | 3,927 | + | ||
| 19 | 19 | Friday, May 2 | boxscore | PIT | @ | SDP | W | 4 | 0 | 9-10 | 2 | 5.5 | Bielecki | Dravecky | Winn | 2:34 | 19,417 | ++ | |
| 20 | 20 | Saturday, May 3 | boxscore | PIT | @ | SDP | W | 7 | 6 | 10-10 | 2 | 5.5 | Guante | Gossage | Clements | 2:59 | 20,515 | +++ | |
| 21 | 21 | Sunday, May 4 | boxscore | PIT | @ | SDP | W | 5 | 2 | 11-10 | 2 | 5.5 | Winn | Lefferts | 2:43 | 21,727 | ++++ | ||
| 22 | 22 | Tuesday, May 6 | boxscore | PIT | SFG | L | 2 | 7 | 11-11 | 3 | 6.5 | Krukow | Reuschel | 2:14 | 7,461 | - | |||
| 23 | 23 | Wednesday, May 7 | boxscore | PIT | SFG | L | 5 | 7 | 11-12 | 3 | 7.5 | Laskey | McWilliams | Robinson | 2:44 | 6,300 | -- | ||
| 24 | 24 | Thursday, May 8 | boxscore | PIT | SFG | W | 8 | 2 | 12-12 | 3 | 7.0 | Bielecki | Garrelts | 2:45 | 6,072 | + | |||
| 25 | 25 | Friday, May 9 | boxscore | PIT | HOU | L | 2 | 3 | 12-13 | 3 | 8.0 | Kerfeld | Winn | Smith | 2:27 | 17,296 | - | ||
| 26 | 26 | Saturday, May 10 | boxscore | PIT | HOU | L | 3 | 6 | 12-14 | 3 | 9.0 | Knepper | Rhoden | DiPino | 2:56 | 13,344 | -- | ||
| 27 | 27 | Sunday, May 11 | boxscore | PIT | HOU | W | 4 | 3 | 12 | 13-14 | 3 | 8.0 | DeLeon | Kerfeld | 3:39 | 13,170 | + | ||
| 28 | 28 | Tuesday, May 13 | boxscore | PIT | SDP | L | 2 | 4 | 13-15 | 3 | 8.5 | Show | Bielecki | McCullers | 2:36 | 5,392 | - | ||
| 29 | 29 | Wednesday, May 14 | boxscore | PIT | SDP | L | 4 | 10 | 13-16 | 3 | 8.5 | Dravecky | Kipper | Gossage | 2:52 | 9,430 | -- | ||
| 30 | 30 | Friday, May 16 | boxscore | PIT | @ | CIN | L | 2 | 7 | 13-17 | 4 | 9.0 | Denny | Rhoden | Franco | 2:43 | 21,097 | --- | |
| 31 | 31 | Saturday, May 17 | boxscore | PIT | @ | CIN | W | 4 | 0 | 14-17 | 3 | 8.0 | Reuschel | Soto | 2:34 | 32,204 | + | ||
| 32 | 32 | Sunday, May 18 | boxscore | PIT | @ | CIN | L | 3 | 7 | 14-18 | 3 | 9.0 | Browning | Bielecki | Robinson | 2:34 | 22,962 | - | |
| 33 | 33 | Tuesday, May 20 | boxscore | PIT | @ | HOU | W | 4 | 2 | 15-18 | 3 | 9.0 | Walk | Ryan | 2:38 | 8,711 | + | ||
| 34 | 34 | Wednesday, May 21 | boxscore | PIT | @ | HOU | W | 2 | 1 | 16-18 | 3 | 9.0 | Rhoden | Scott | 2:22 | 6,990 | ++ | ||
| 35 | 35 | Thursday, May 22 | boxscore | PIT | @ | HOU | L | 0 | 4 | 16-19 | 3 | 9.0 | Knepper | Reuschel | 2:29 | 4,784 | - | ||
| 36 | 36 | Friday, May 23 | boxscore | PIT | CIN | L | 9 | 12 | 12 | 16-20 | 3 | 9.0 | Power | DeLeon | 4:24 | 12,833 | -- | ||
| 37 | 37 | Saturday, May 24 | boxscore | PIT | CIN | L | 2 | 4 | 16-21 | 3 | 10.0 | Gullickson | Bielecki | 2:29 | 18,631 | --- | |||
| 38 | 38 | Sunday, May 25 | boxscore | PIT | CIN | L | 4 | 7 | 16-22 | 3 | 11.0 | Denny | Kipper | 2:42 | 19,568 | ---- | |||
| 39 | 39 | Monday, May 26 | boxscore | PIT | ATL | L | 4 | 9 | 16-23 | 3 | 11.5 | Assenmacher | Walk | 2:52 | 14,102 | ----- | |||
| 40 | 40 | Tuesday, May 27 | boxscore | PIT | ATL | L | 2 | 6 | 12 | 16-24 | 3 | 12.5 | Garber | Walk | 3:45 | 2,830 | ------ | ||
| 41 | 41 | Wednesday, May 28 | boxscore | PIT | ATL | W | 4 | 3 | 17-24 | 3 | 12.5 | McWilliams | Palmer | DeLeon | 2:24 | 6,860 | + | ||
| 42 | 42 | Friday, May 30 | boxscore | PIT | LAD | L | 4 | 6 | 11 | 17-25 | 5 | 14.0 | Niedenfuer | DeLeon | Reuss | 2:16 | 25,320 | - | |
| 43 | 43 | Saturday, May 31 | boxscore | PIT | LAD | W | 4 | 0 | 18-25 | 4 | 13.0 | Kipper | Honeycutt | Clements | 3:00 | 15,709 | + | ||
| 44 | 44 | Sunday, Jun 1 | boxscore | PIT | LAD | W | 12 | 3 | 19-25 | 4 | 12.0 | Rhoden | Welch | 3:06 | 23,530 | ++ | |||
| 45 | 45 | Monday, Jun 2 | boxscore | PIT | @ | ATL | W | 9 | 2 | 20-25 | 4 | 12.0 | Reuschel | Palmer | 2:59 | 12,996 | +++ | ||
| 46 | 46 | Tuesday, Jun 3 | boxscore | PIT | @ | ATL | L | 5 | 8 | 20-26 | 4 | 12.0 | Mahler | Guante | Assenmacher | 2:38 | 10,649 | - | |
| 47 | 47 | Wednesday, Jun 4 | boxscore | PIT | @ | ATL | W | 12 | 3 | 21-26 | 4 | 12.0 | Bielecki | Johnson | Winn | 2:50 | 14,012 | + | |
| 48 | 48 | Thursday, Jun 5 | boxscore | PIT | NYM | L | 0 | 7 | 21-27 | 4 | 13.0 | Ojeda | Kipper | 2:26 | 8,855 | - | |||
| 49 | 49 | Friday, Jun 6 | boxscore | PIT | NYM | W | 7 | 1 | 22-27 | 4 | 13.0 | Rhoden | Darling | Walk | 2:57 | 0 | + | ||
| 50 | 50 | Friday, Jun 6 | boxscore | PIT | NYM | L | 4 | 10 | 22-28 | 4 | 13.0 | McDowell | DeLeon | 2:59 | 15,113 | - | |||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 51 | 51 | Saturday, Jun 7 | boxscore | PIT | NYM | L | 4 | 6 | 22-29 | 4 | 14.0 | Gooden | Reuschel | Orosco | 3:01 | 29,770 | -- | ||
| 52 | 52 | Sunday, Jun 8 | boxscore | PIT | NYM | L | 3 | 4 | 22-30 | 4 | 15.0 | Fernandez | McWilliams | Orosco | 2:37 | 14,391 | --- | ||
| 53 | 53 | Monday, Jun 9 | boxscore | PIT | CHC | W | 6 | 5 | 11 | 23-30 | 4 | 14.0 | Robinson | Baller | 3:42 | 6,056 | + | ||
| 54 | 54 | Tuesday, Jun 10 | boxscore | PIT | CHC | W | 6 | 4 | 24-30 | 4 | 14.0 | Kipper | Eckersley | Guante | 3:01 | 5,899 | ++ | ||
| 55 | 55 | Wednesday, Jun 11 | boxscore | PIT | CHC | W | 5 | 3 | 25-30 | 4 | 14.0 | Rhoden | Hoffman | Robinson | 3:02 | 12,702 | +++ | ||
| 56 | 56 | Friday, Jun 13 | boxscore | PIT | @ | NYM | L | 5 | 6 | 25-31 | 4 | 15.0 | Orosco | Clements | 3:13 | 37,582 | - | ||
| 57 | 57 | Saturday, Jun 14 | boxscore | PIT | @ | NYM | L | 1 | 5 | 25-32 | 4 | 16.0 | Fernandez | Bielecki | 2:26 | 47,664 | -- | ||
| 58 | 58 | Sunday, Jun 15 | boxscore | PIT | @ | NYM | L | 1 | 4 | 25-33 | 4 | 18.0 | Ojeda | Walk | 2:38 | 0 | --- | ||
| 59 | 59 | Sunday, Jun 15 | boxscore | PIT | @ | NYM | L | 5 | 8 | 25-34 | 4 | 18.0 | Aguilera | Kipper | McDowell | 2:59 | 41,847 | ---- | |
| 60 | 60 | Monday, Jun 16 | boxscore | PIT | STL | L | 2 | 4 | 25-35 | 4 | 19.0 | Cox | Rhoden | Worrell | 2:49 | 7,834 | ----- | ||
| 61 | 61 | Tuesday, Jun 17 | boxscore | PIT | STL | L | 2 | 7 | 25-36 | 5 | 19.0 | Mathews | Reuschel | 2:35 | 9,424 | ------ | |||
| 62 | 62 | Wednesday, Jun 18 | boxscore | PIT | STL | W | 2 | 1 | 12 | 26-36 | 4 | 18.0 | Robinson | Worrell | 3:25 | 10,455 | + | ||
| 63 | 63 | Thursday, Jun 19 | boxscore | PIT | @ | MON | W | 4 | 2 | 27-36 | 4 | 17.5 | Kipper | Smith | Guante | 2:53 | 11,918 | ++ | |
| 64 | 64 | Friday, Jun 20 | boxscore | PIT | @ | MON | L | 2 | 7 | 27-37 | 4 | 18.5 | McGaffigan | Walk | McClure | 2:54 | 16,223 | - | |
| 65 | 65 | Saturday, Jun 21 | boxscore | PIT | @ | MON | W | 14 | 1 | 28-37 | 4 | 17.5 | Rhoden | Tibbs | 2:31 | 23,381 | + | ||
| 66 | 66 | Sunday, Jun 22 | boxscore | PIT | @ | MON | L | 1 | 2 | 28-38 | 5 | 18.5 | Hesketh | Reuschel | Reardon | 2:30 | 27,129 | - | |
| 67 | 67 | Monday, Jun 23 | boxscore | PIT | @ | STL | L | 1 | 2 | 11 | 28-39 | 5 | 18.5 | Worrell | Clements | 3:18 | 25,506 | -- | |
| 68 | 68 | Tuesday, Jun 24 | boxscore | PIT | @ | STL | L | 2 | 5 | 28-40 | 5 | 18.5 | Burris | Winn | Dayley | 3:07 | 24,251 | --- | |
| 69 | 69 | Wednesday, Jun 25 | boxscore | PIT | @ | STL | L | 1 | 2 | 10 | 28-41 | 6 | 19.5 | Horton | Clements | 3:07 | 29,146 | ---- | |
| 70 | 70 | Friday, Jun 27 | boxscore | PIT | MON | W | 7 | 1 | 29-41 | 5 | 19.0 | Rhoden | Tibbs | 2:22 | 15,392 | + | |||
| 71 | 71 | Saturday, Jun 28 | boxscore | PIT | MON | L | 2 | 3 | 29-42 | 5 | 20.0 | Hesketh | Reuschel | Reardon | 2:54 | 35,385 | - | ||
| 72 | 72 | Sunday, Jun 29 | boxscore | PIT | MON | L | 4 | 6 | 29-43 | 5 | 21.0 | Youmans | Bielecki | McClure | 3:15 | 26,689 | -- | ||
| 73 | 73 | Monday, Jun 30 | boxscore | PIT | PHI | W | 3 | 2 | 30-43 | 5 | 21.0 | Walk | Hudson | Guante | 2:40 | 5,881 | + | ||
| 74 | 74 | Tuesday, Jul 1 | boxscore | PIT | PHI | L | 4 | 5 | 12 | 30-44 | 5 | 22.0 | Hume | McWilliams | 4:20 | 8,118 | - | ||
| 75 | 75 | Wednesday, Jul 2 | boxscore | PIT | PHI | W | 4 | 3 | 31-44 | 5 | 22.0 | Rhoden | Carman | 2:54 | 6,782 | + | |||
| 76 | 76 | Thursday, Jul 3 | boxscore | PIT | @ | LAD | L | 3 | 6 | 31-45 | 5 | 23.0 | Welch | Reuschel | 2:48 | 30,722 | - | ||
| 77 | 77 | Friday, Jul 4 | boxscore | PIT | @ | LAD | W | 6 | 4 | 32-45 | 4 | 23.0 | Bielecki | Valenzuela | 2:44 | 46,315 | + | ||
| 78 | 78 | Saturday, Jul 5 | boxscore | PIT | @ | LAD | W | 5 | 0 | 33-45 | 4 | 22.0 | Walk | Hershiser | 2:16 | 32,694 | ++ | ||
| 79 | 79 | Sunday, Jul 6 | boxscore | PIT | @ | LAD | L | 3 | 4 | 33-46 | 4 | 23.0 | Honeycutt | Winn | Howell | 2:38 | 27,563 | - | |
| 80 | 80 | Monday, Jul 7 | boxscore | PIT | @ | SDP | W | 3 | 1 | 10 | 34-46 | 4 | 22.0 | Guante | Gossage | 3:05 | 28,366 | + | |
| 81 | 81 | Tuesday, Jul 8 | boxscore | PIT | @ | SDP | L | 2 | 4 | 34-47 | 4 | 22.0 | Hoyt | Reuschel | Lefferts | 2:08 | 16,051 | - | |
| 82 | 82 | Wednesday, Jul 9 | boxscore | PIT | @ | SDP | W | 6 | 4 | 35-47 | 4 | 21.0 | Bielecki | McCullers | Robinson | 3:04 | 15,816 | + | |
| 83 | 83 | Thursday, Jul 10 | boxscore | PIT | @ | SFG | L | 3 | 6 | 35-48 | 4 | 22.0 | Blue | Walk | Garrelts | 3:00 | 9,795 | - | |
| 84 | 84 | Friday, Jul 11 | boxscore | PIT | @ | SFG | W | 8 | 4 | 36-48 | 4 | 22.0 | Winn | Carlton | Robinson | 3:10 | 18,703 | + | |
| 85 | 85 | Saturday, Jul 12 | boxscore | PIT | @ | SFG | L | 1 | 3 | 36-49 | 5 | 23.0 | Krukow | Rhoden | 2:34 | 19,549 | - | ||
| 86 | 86 | Sunday, Jul 13 | boxscore | PIT | @ | SFG | L | 4 | 11 | 36-50 | 5 | 24.0 | LaCoss | Reuschel | 2:42 | 36,877 | -- | ||
| 87 | 87 | Thursday, Jul 17 | boxscore | PIT | SDP | L | 1 | 2 | 36-51 | 6 | 25.0 | McCullers | Rhoden | Lefferts | 2:39 | 8,865 | --- | ||
| 88 | 88 | Friday, Jul 18 | boxscore | PIT | SDP | W | 12 | 7 | 37-51 | 5 | 24.0 | Reuschel | Hawkins | 2:38 | 10,975 | + | |||
| 89 | 89 | Saturday, Jul 19 | boxscore | PIT | SDP | W | 4 | 3 | 38-51 | 5 | 23.0 | Guante | Lefferts | 2:09 | 8,559 | ++ | |||
| 90 | 90 | Sunday, Jul 20 | boxscore | PIT | SDP | W | 4 | 2 | 39-51 | 4 | 22.0 | McWilliams | Dravecky | Robinson | 2:27 | 15,765 | +++ | ||
| 91 | 91 | Tuesday, Jul 22 | boxscore | PIT | LAD | L | 3 | 4 | 39-52 | 6 | 23.5 | Powell | Guante | Howell | 2:55 | 10,325 | - | ||
| 92 | 92 | Wednesday, Jul 23 | boxscore | PIT | LAD | L | 5 | 6 | 39-53 | 6 | 24.5 | Hershiser | Reuschel | Howell | 2:53 | 21,756 | -- | ||
| 93 | 93 | Thursday, Jul 24 | boxscore | PIT | LAD | L | 2 | 9 | 39-54 | 6 | 25.0 | Valenzuela | Walk | 2:44 | 11,044 | --- | |||
| 94 | 94 | Friday, Jul 25 | boxscore | PIT | SFG | L | 3 | 7 | 39-55 | 6 | 25.5 | Mason | Bielecki | Robinson | 3:06 | 8,622 | ---- | ||
| 95 | 95 | Saturday, Jul 26 | boxscore | PIT | SFG | L | 0 | 9 | 39-56 | 6 | 25.0 | Carlton | McWilliams | 2:31 | 27,910 | ----- | |||
| 96 | 96 | Sunday, Jul 27 | boxscore | PIT | SFG | W | 7 | 0 | 40-56 | 6 | 25.0 | Rhoden | Blue | Robinson | 2:49 | 10,767 | + | ||
| 97 | 97 | Monday, Jul 28 | boxscore | PIT | @ | MON | W | 7 | 4 | 41-56 | 6 | 25.0 | Reuschel | Smith | Jones | 2:59 | 16,221 | ++ | |
| 98 | 98 | Wednesday, Jul 30 | boxscore | PIT | @ | MON | L | 2 | 3 | 41-57 | 6 | 25.0 | Tibbs | Winn | Reardon | 2:45 | 12,672 | - | |
| 99 | 99 | Friday, Aug 1 | boxscore | PIT | STL | W | 4 | 0 | 42-57 | 6 | 25.0 | Rhoden | Mathews | 1:59 | 9,794 | + | |||
| 100 | 100 | Saturday, Aug 2 | boxscore | PIT | STL | L | 3 | 7 | 42-58 | 6 | 26.0 | Tudor | McWilliams | 3:00 | 14,233 | - | |||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 101 | 101 | Sunday, Aug 3 | boxscore | PIT | STL | W | 3 | 0 | 43-58 | 6 | 26.0 | Reuschel | Cox | 2:07 | 14,849 | + | |||
| 102 | 102 | Monday, Aug 4 | boxscore | PIT | MON | L | 4 | 5 | 43-59 | 6 | 26.0 | Tibbs | Jones | Reardon | 2:59 | 7,412 | - | ||
| 103 | 103 | Tuesday, Aug 5 | boxscore | PIT | MON | L | 0 | 3 | 43-60 | 6 | 26.0 | Martinez | Bielecki | 2:51 | 8,334 | -- | |||
| 104 | 104 | Wednesday, Aug 6 | boxscore | PIT | MON | L | 2 | 3 | 43-61 | 6 | 27.5 | Youmans | Rhoden | Reardon | 2:50 | 6,649 | --- | ||
| 105 | 105 | Thursday, Aug 7 | boxscore | PIT | MON | L | 4 | 5 | 43-62 | 6 | 28.5 | McGaffigan | Robinson | McClure | 2:46 | 8,239 | ---- | ||
| 106 | 106 | Friday, Aug 8 | boxscore | PIT | @ | STL | L | 1 | 3 | 43-63 | 6 | 28.5 | Cox | Reuschel | Horton | 2:29 | 36,244 | ----- | |
| 107 | 107 | Saturday, Aug 9 | boxscore | PIT | @ | STL | W | 8 | 5 | 44-63 | 6 | 28.5 | Walk | Burris | Robinson | 3:16 | 40,723 | + | |
| 108 | 108 | Sunday, Aug 10 | boxscore | PIT | @ | STL | L | 4 | 5 | 44-64 | 6 | 29.5 | Forsch | Bielecki | Worrell | 2:21 | 36,286 | - | |
| 109 | 109 | Monday, Aug 11 | boxscore | PIT | @ | CHC | W | 10 | 7 | 45-64 | 6 | 29.5 | Rhoden | Moyer | Robinson | 2:54 | 20,636 | + | |
| 110 | 110 | Tuesday, Aug 12 | boxscore | PIT | @ | CHC | L | 1 | 3 | 45-65 | 6 | 29.5 | Sanderson | McWilliams | Smith | 2:48 | 23,874 | - | |
| 111 | 111 | Wednesday, Aug 13 | boxscore | PIT | @ | CHC | L | 8 | 9 | 45-66 | 6 | 29.5 | DiPino | Robinson | Smith | 3:10 | 24,888 | -- | |
| 112 | 112 | Thursday, Aug 14 | boxscore | PIT | @ | PHI | L | 7 | 8 | 45-67 | 6 | 30.0 | Tekulve | Jones | 2:54 | 20,643 | --- | ||
| 113 | 113 | Friday, Aug 15 | boxscore | PIT | @ | PHI | W | 6 | 5 | 46-67 | 6 | 29.5 | Guante | Schatzeder | Robinson | 2:54 | 0 | + | |
| 114 | 114 | Friday, Aug 15 | boxscore | PIT | @ | PHI | L | 2 | 3 | 46-68 | 6 | 29.5 | Maddux | Winn | Bedrosian | 2:28 | 27,724 | - | |
| 115 | 115 | Saturday, Aug 16 | boxscore | PIT | @ | PHI | W | 6 | 1 | 47-68 | 6 | 29.0 | Rhoden | Gross | 2:45 | 0 | + | ||
| 116 | 116 | Saturday, Aug 16 | boxscore | PIT | @ | PHI | L | 0 | 6 | 47-69 | 6 | 29.0 | Hume | McWilliams | Tekulve | 1:54 | 31,349 | - | |
| 117 | 117 | Sunday, Aug 17 | boxscore | PIT | @ | PHI | L | 1 | 5 | 5 | 47-70 | 6 | 29.5 | Ruffin | Reuschel | 1:16 | 34,298 | -- | |
| 118 | 118 | Monday, Aug 18 | boxscore | PIT | HOU | L | 0 | 3 | 47-71 | 6 | 30.5 | Scott | Walk | 2:24 | 7,965 | --- | |||
| 119 | 119 | Tuesday, Aug 19 | boxscore | PIT | HOU | L | 0 | 1 | 47-72 | 6 | 31.5 | Deshaies | Bielecki | Smith | 2:31 | 9,128 | ---- | ||
| 120 | 120 | Wednesday, Aug 20 | boxscore | PIT | HOU | W | 4 | 1 | 48-72 | 6 | 31.5 | Rhoden | Knepper | 2:12 | 16,997 | + | |||
| 121 | 121 | Friday, Aug 22 | boxscore | PIT | ATL | W | 16 | 5 | 49-72 | 6 | 31.5 | Winn | Mahler | Jones | 3:10 | 27,517 | ++ | ||
| 122 | 122 | Saturday, Aug 23 | boxscore | PIT | ATL | W | 4 | 3 | 50-72 | 6 | 31.5 | Reuschel | Smith | Robinson | 2:11 | 15,535 | +++ | ||
| 123 | 123 | Sunday, Aug 24 | boxscore | PIT | ATL | W | 4 | 3 | 51-72 | 6 | 30.5 | Walk | Alexander | Robinson | 2:27 | 15,681 | ++++ | ||
| 124 | 124 | Monday, Aug 25 | boxscore | PIT | CIN | L | 4 | 5 | 51-73 | 6 | 31.5 | Robinson | McWilliams | Franco | 2:23 | 8,093 | - | ||
| 125 | 125 | Tuesday, Aug 26 | boxscore | PIT | CIN | L | 4 | 5 | 51-74 | 6 | 32.5 | Franco | Krawczyk | 2:44 | 7,022 | -- | |||
| 126 | 126 | Wednesday, Aug 27 | boxscore | PIT | CIN | L | 5 | 9 | 51-75 | 6 | 33.5 | Murphy | Robinson | 3:11 | 7,490 | --- | |||
| 127 | 127 | Friday, Aug 29 | boxscore | PIT | @ | HOU | L | 2 | 3 | 51-76 | 6 | 34.5 | Scott | Reuschel | Smith | 2:37 | 22,801 | ---- | |
| 128 | 128 | Saturday, Aug 30 | boxscore | PIT | @ | HOU | W | 13 | 3 | 52-76 | 6 | 34.5 | Rhoden | Deshaies | 2:46 | 30,598 | + | ||
| 129 | 129 | Sunday, Aug 31 | boxscore | PIT | @ | HOU | W | 8 | 2 | 53-76 | 6 | 33.5 | Walk | Knepper | 2:17 | 25,405 | ++ | ||
| 130 | 130 | Monday, Sep 1 | boxscore | PIT | @ | CIN | L | 5 | 6 | 53-77 | 6 | 34.5 | Power | Bielecki | Franco | 2:35 | 22,064 | - | |
| 131 | 131 | Tuesday, Sep 2 | boxscore | PIT | @ | CIN | L | 1 | 9 | 53-78 | 6 | 34.5 | Gullickson | Kipper | 2:25 | 13,491 | -- | ||
| 132 | 132 | Wednesday, Sep 3 | boxscore | PIT | @ | CIN | W | 5 | 3 | 10 | 54-78 | 6 | 34.5 | Jones | Franco | 2:51 | 12,200 | + | |
| 133 | 133 | Friday, Sep 5 | boxscore | PIT | @ | ATL | L | 3 | 4 | 54-79 | 6 | 35.0 | Assenmacher | Rhoden | 2:40 | 6,992 | - | ||
| 134 | 134 | Saturday, Sep 6 | boxscore | PIT | @ | ATL | L | 2 | 4 | 54-80 | 6 | 36.0 | Palmer | Fansler | Dedmon | 2:34 | 8,875 | -- | |
| 135 | 135 | Sunday, Sep 7 | boxscore | PIT | @ | ATL | W | 3 | 1 | 55-80 | 6 | 36.5 | Kipper | Speck | Jones | 2:24 | 6,021 | + | |
| 136 | 136 | Monday, Sep 8 | boxscore | PIT | STL | W | 3 | 2 | 56-80 | 6 | 35.5 | Patterson | Cox | Pena | 2:29 | 4,990 | ++ | ||
| 137 | 137 | Tuesday, Sep 9 | boxscore | PIT | STL | L | 1 | 3 | 56-81 | 6 | 35.5 | Horton | Reuschel | Worrell | 2:29 | 4,291 | - | ||
| 138 | 138 | Wednesday, Sep 10 | boxscore | PIT | STL | L | 3 | 4 | 56-82 | 6 | 36.5 | Soff | Jones | Worrell | 2:58 | 7,479 | -- | ||
| 139 | 139 | Friday, Sep 12 | boxscore | PIT | CHC | L | 8 | 9 | 10 | 56-83 | 6 | 36.5 | DiPino | Robinson | Gumpert | 3:54 | 15,664 | --- | |
| 140 | 140 | Saturday, Sep 13 | boxscore | PIT | CHC | W | 5 | 2 | 57-83 | 6 | 35.5 | Patterson | Maddux | Robinson | 2:49 | 10,841 | + | ||
| 141 | 141 | Sunday, Sep 14 | boxscore | PIT | CHC | W | 9 | 2 | 58-83 | 6 | 34.5 | Reuschel | Hall | 2:27 | 16,256 | ++ | |||
| 142 | 142 | Monday, Sep 15 | boxscore | PIT | @ | PHI | L | 0 | 5 | 58-84 | 6 | 34.5 | Carman | Rhoden | 2:23 | 14,089 | - | ||
| 143 | 143 | Tuesday, Sep 16 | boxscore | PIT | @ | PHI | L | 5 | 9 | 58-85 | 6 | 35.5 | Tekulve | Bielecki | 2:52 | 14,315 | -- | ||
| 144 | 144 | Wednesday, Sep 17 | boxscore | PIT | @ | MON | L | 5 | 6 | 58-86 | 6 | 36.0 | St. Claire | Jones | Reardon | 2:30 | 0 | --- | |
| 145 | 145 | Wednesday, Sep 17 | boxscore | PIT | @ | MON | W | 4 | 1 | 59-86 | 6 | 36.0 | Kipper | Sebra | Robinson | 2:22 | 5,774 | + | |
| 146 | 146 | Thursday, Sep 18 | boxscore | PIT | @ | MON | W | 3 | 1 | 60-86 | 6 | 36.0 | Smiley | Reardon | Robinson | 2:44 | 4,012 | ++ | |
| 147 | 147 | Friday, Sep 19 | boxscore | PIT | @ | CHC | L | 2 | 8 | 60-87 | 6 | 36.0 | Sanderson | Pena | 2:36 | 5,152 | - | ||
| 148 | 148 | Saturday, Sep 20 | boxscore | PIT | @ | CHC | L | 0 | 1 | 60-88 | 6 | 37.0 | Moyer | Rhoden | Smith | 2:26 | 22,710 | -- | |
| 149 | 149 | Sunday, Sep 21 | boxscore | PIT | @ | CHC | L | 2 | 3 | 60-89 | 6 | 37.0 | Sanderson | Pena | Smith | 3:09 | 22,336 | --- | |
| 150 | 150 | Monday, Sep 22 | boxscore | PIT | PHI | L | 4 | 8 | 60-90 | 6 | 38.0 | Bittiger | Kipper | 2:53 | 3,934 | ---- | |||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 151 | 151 | Tuesday, Sep 23 | boxscore | PIT | PHI | W | 6 | 5 | 61-90 | 6 | 38.0 | Jones | Bedrosian | 2:38 | 3,631 | + | |||
| 152 | 152 | Wednesday, Sep 24 | boxscore | PIT | MON | W | 2 | 1 | 62-90 | 6 | 37.0 | Robinson | McClure | 2:31 | 3,092 | ++ | |||
| 153 | 153 | Thursday, Sep 25 | boxscore | PIT | MON | L | 4 | 8 | 62-91 | 6 | 38.0 | Owchinko | Rhoden | 2:47 | 3,963 | - | |||
| 154 | 154 | Friday, Sep 26 | boxscore | PIT | NYM | L | 1 | 3 | 62-92 | 6 | 39.0 | Fernandez | Fansler | McDowell | 2:33 | 14,080 | -- | ||
| 155 | 155 | Saturday, Sep 27 | boxscore | PIT | NYM | L | 2 | 4 | 11 | 62-93 | 6 | 40.0 | Orosco | McWilliams | Sisk | 3:49 | 13,210 | --- | |
| 156 | 156 | Sunday, Sep 28 | boxscore | PIT | NYM | L | 1 | 4 | 11 | 62-94 | 6 | 41.0 | Aguilera | Walk | 3:05 | 30,606 | ---- | ||
| 157 | 157 | Tuesday, Sep 30 | boxscore | PIT | @ | STL | L | 3 | 5 | 62-95 | 6 | 41.0 | Cox | Rhoden | 2:29 | 12,338 | ----- | ||
| 158 | 158 | Wednesday, Oct 1 | boxscore | PIT | @ | STL | W | 4 | 3 | 63-95 | 6 | 41.0 | McWilliams | Soff | Robinson | 2:36 | 16,039 | + | |
| 159 | 159 | Thursday, Oct 2 | boxscore | PIT | @ | STL | W | 5 | 1 | 64-95 | 6 | 41.0 | Kipper | Conroy | 2:20 | 20,643 | ++ | ||
| 160 | 160 | Saturday, Oct 4 | boxscore | PIT | @ | NYM | L | 1 | 6 | 64-96 | 6 | 43.0 | Ojeda | Fansler | Orosco | 2:22 | 0 | - | |
| 161 | 161 | Saturday, Oct 4 | boxscore | PIT | @ | NYM | L | 2 | 5 | 64-97 | 6 | 43.0 | Aguilera | Patterson | McDowell | 2:43 | 30,810 | -- | |
| 162 | 162 | Sunday, Oct 5 | boxscore | PIT | @ | NYM | L | 0 | 9 | 64-98 | 6 | 44.0 | Darling | Pena | Fernandez | 2:26 | 32,170 | --- | |
| 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.