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| Season Summary | 88-74, Final Rank:3, GB: 12.0 | |
| Days in First | 6 | last on Sunday, Apr 13, counts only the days a team played and was in first at the end of the day |
| 7 | last on Apr 13, counts all days of the season including off days | |
| Biggest Lead | never led | |
| Farthest Behind | 14.5 | last on Thursday, Aug 7, for days on which they played |
| Most Games over .500 | 14 | last on Thursday, Oct 2 |
| Most Games under .500 | 5 | last on Sunday, Jul 6 |
| Longest Winning Streak | 8 | Sunday, Aug 17 to Sunday, Aug 24 |
| Longest Losing Streak | 7 | Sunday, Jun 29 to Sunday, Jul 6 |
| Most Runs Allowed | 14 | Wednesday, Jul 2 |
| Most Runs Scored | 14 | Sunday, Jun 1 |
| Longest Game (innings) | 15 | Thursday, Jul 31 |
| 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 | @ | STL | W | 6 | 2 | 14 | 1-0 | 1 | Tied | Dal Canton | Nelson | Hartenstein | 3:19 | 38,163 | + |
| 2 | 2 | Wednesday, Apr 9 | boxscore | PIT | @ | STL | W | 6 | 1 | 2-0 | 1 | Tied | Veale | Briles | 2:10 | 10,739 | ++ | ||
| 3 | 3 | Thursday, Apr 10 | boxscore | PIT | @ | STL | W | 3 | 2 | 3-0 | 1 | Tied | Ellis | Washburn | 2:00 | 10,283 | +++ | ||
| 4 | 4 | Friday, Apr 11 | boxscore | PIT | PHI | W | 7 | 1 | 4-0 | 1 | Tied | Moose | Johnson | 2:07 | 31,641 | ++++ | |||
| 5 | 5 | Saturday, Apr 12 | boxscore | PIT | PHI | L | 1 | 8 | 4-1 | 1 | Tied | Jackson | Bunning | 2:28 | 12,474 | - | |||
| 6 | 6 | Sunday, Apr 13 | boxscore | PIT | PHI | W | 6 | 5 | 5-1 | 1 | Tied | Kline | Wilson | 2:32 | 14,981 | + | |||
| 7 | 7 | Monday, Apr 14 | boxscore | PIT | @ | CHC | L | 0 | 4 | 5-2 | 2 | 1.0 | Holtzman | Veale | 2:27 | 3,114 | - | ||
| 8 | 8 | Tuesday, Apr 15 | boxscore | PIT | @ | CHC | L | 4 | 7 | 5-3 | 2 | 2.0 | Aguirre | Ellis | Abernathy | 2:34 | 4,362 | -- | |
| 9 | 9 | Wednesday, Apr 16 | boxscore | PIT | NYM | W | 11 | 3 | 6-3 | 2 | 2.0 | Moose | Koosman | 3:03 | 7,666 | + | |||
| 10 | 10 | Thursday, Apr 17 | boxscore | PIT | NYM | W | 4 | 0 | 7-3 | 2 | 2.0 | Bunning | Cardwell | Kline | 2:12 | 8,097 | ++ | ||
| 11 | 11 | Saturday, Apr 19 | boxscore | PIT | @ | PHI | W | 8 | 6 | 8-3 | 2 | 2.0 | Blass | Jackson | Dal Canton | 2:19 | 3,953 | +++ | |
| 12 | 12 | Sunday, Apr 20 | boxscore | PIT | @ | PHI | L | 1 | 7 | 8-4 | 2 | 2.5 | Wise | Veale | Lersch | 2:09 | 4,930 | - | |
| 13 | 13 | Tuesday, Apr 22 | boxscore | PIT | CHC | W | 7 | 5 | 9-4 | 2 | 0.5 | Hartenstein | Hands | 2:20 | 0 | + | |||
| 14 | 14 | Tuesday, Apr 22 | boxscore | PIT | CHC | W | 6 | 5 | 10-4 | 2 | 0.5 | Dal Canton | Nye | Kline | 2:35 | 7,906 | ++ | ||
| 15 | 15 | Wednesday, Apr 23 | boxscore | PIT | @ | NYM | L | 0 | 2 | 10-5 | 2 | 1.0 | Koosman | Bunning | 2:17 | 7,274 | - | ||
| 16 | 16 | Friday, Apr 25 | boxscore | PIT | MON | W | 8 | 2 | 11-5 | 2 | 0.5 | Blass | Morton | Hartenstein | 2:51 | 10,947 | + | ||
| 17 | 17 | Saturday, Apr 26 | boxscore | PIT | MON | W | 4 | 3 | 12-5 | 2 | 0.5 | Veale | Stoneman | Hartenstein | 2:35 | 8,372 | ++ | ||
| 18 | 18 | Sunday, Apr 27 | boxscore | PIT | MON | L | 2 | 4 | 12-6 | 2 | 1.0 | Jaster | Ellis | 2:15 | 24,425 | - | |||
| 19 | 19 | Monday, Apr 28 | boxscore | PIT | STL | L | 2 | 6 | 12-7 | 2 | 2.0 | Carlton | Moose | 2:38 | 3,859 | -- | |||
| 20 | 20 | Wednesday, Apr 30 | boxscore | PIT | STL | W | 2 | 1 | 13-7 | 2 | 2.0 | Bunning | Giusti | 2:08 | 0 | + | |||
| 21 | 21 | Wednesday, Apr 30 | boxscore | PIT | STL | L | 1 | 8 | 13-8 | 2 | 2.0 | Gibson | Blass | 2:11 | 10,895 | - | |||
| 22 | 22 | Thursday, May 1 | boxscore | PIT | STL | L | 3 | 9 | 13-9 | 2 | 2.5 | Briles | Veale | 2:08 | 7,043 | -- | |||
| 23 | 23 | Friday, May 2 | boxscore | PIT | @ | MON | W | 7 | 3 | 14-9 | 2 | 2.5 | Ellis | Jaster | 2:24 | 11,892 | + | ||
| 24 | 24 | Saturday, May 3 | boxscore | PIT | @ | MON | W | 4 | 2 | 15-9 | 2 | 2.5 | Moose | Morton | Hartenstein | 2:34 | 14,147 | ++ | |
| 25 | 25 | Sunday, May 4 | boxscore | PIT | @ | MON | L | 4 | 6 | 15-10 | 2 | 2.0 | Face | Kline | 2:41 | 16,931 | - | ||
| 26 | 26 | Tuesday, May 6 | boxscore | PIT | SDP | L | 2 | 4 | 15-11 | 2 | 3.0 | Kelley | Blass | Reberger | 2:24 | 5,793 | -- | ||
| 27 | 27 | Wednesday, May 7 | boxscore | PIT | SDP | W | 2 | 0 | 16-11 | 2 | 2.0 | Veale | Kirby | Hartenstein | 2:16 | 4,189 | + | ||
| 28 | 28 | Friday, May 9 | boxscore | PIT | LAD | L | 3 | 13 | 16-12 | 2 | 2.0 | Singer | Ellis | Moeller | 2:34 | 6,837 | - | ||
| 29 | 29 | Saturday, May 10 | boxscore | PIT | LAD | L | 1 | 4 | 16-13 | 2 | 2.5 | Sutton | Bunning | Brewer | 2:23 | 4,979 | -- | ||
| 30 | 30 | Monday, May 12 | boxscore | PIT | SFG | W | 4 | 3 | 17-13 | 2 | 3.0 | Hartenstein | Gibbon | 2:27 | 3,396 | + | |||
| 31 | 31 | Tuesday, May 13 | boxscore | PIT | SFG | L | 8 | 11 | 17-14 | 2 | 4.0 | Herbel | Moose | Linzy | 2:57 | 5,846 | - | ||
| 32 | 32 | Wednesday, May 14 | boxscore | PIT | SFG | L | 0 | 3 | 17-15 | 2 | 5.0 | Marichal | Bunning | 2:08 | 8,296 | -- | |||
| 33 | 33 | Friday, May 16 | boxscore | PIT | @ | LAD | L | 3 | 4 | 17-16 | 2 | 6.0 | Brewer | Kline | 2:42 | 19,016 | --- | ||
| 34 | 34 | Saturday, May 17 | boxscore | PIT | @ | LAD | L | 0 | 6 | 17-17 | 2 | 6.0 | Osteen | Ellis | 2:17 | 50,120 | ---- | ||
| 35 | 35 | Sunday, May 18 | boxscore | PIT | @ | LAD | L | 5 | 6 | 17-18 | 2 | 6.0 | Brewer | Ramos | 2:53 | 21,086 | ----- | ||
| 36 | 36 | Tuesday, May 20 | boxscore | PIT | @ | SDP | W | 6 | 3 | 18-18 | 2 | 6.0 | Bunning | Niekro | Hartenstein | 2:30 | 4,947 | + | |
| 37 | 37 | Wednesday, May 21 | boxscore | PIT | @ | SDP | W | 11 | 1 | 19-18 | 2 | 5.0 | Moose | Sisk | 2:27 | 34,334 | ++ | ||
| 38 | 38 | Thursday, May 22 | boxscore | PIT | @ | SDP | W | 7 | 1 | 20-18 | 2 | 5.0 | Blass | Kirby | 2:17 | 4,001 | +++ | ||
| 39 | 39 | Friday, May 23 | boxscore | PIT | @ | SFG | L | 0 | 3 | 20-19 | 2 | 6.0 | Robertson | Ellis | 2:24 | 8,217 | - | ||
| 40 | 40 | Saturday, May 24 | boxscore | PIT | @ | SFG | L | 2 | 5 | 20-20 | 2 | 7.0 | McCormick | Veale | 2:19 | 18,616 | -- | ||
| 41 | 41 | Sunday, May 25 | boxscore | PIT | @ | SFG | W | 2 | 1 | 21-20 | 2 | 6.0 | Bunning | Perry | 2:23 | 0 | + | ||
| 42 | 42 | Sunday, May 25 | boxscore | PIT | @ | SFG | W | 6 | 2 | 22-20 | 2 | 6.0 | Moose | Sadecki | Dal Canton | 2:46 | 24,041 | ++ | |
| 43 | 43 | Wednesday, May 28 | boxscore | PIT | @ | CIN | L | 6 | 7 | 22-21 | 2 | 6.5 | Carroll | Kline | 2:39 | 7,458 | - | ||
| 44 | 44 | Thursday, May 29 | boxscore | PIT | @ | CIN | L | 4 | 10 | 22-22 | 2 | 7.0 | Merritt | Veale | 2:10 | 8,161 | -- | ||
| 45 | 45 | Friday, May 30 | boxscore | PIT | HOU | W | 9 | 3 | 23-22 | 2 | 7.5 | Bunning | Lemaster | 2:41 | 0 | + | |||
| 46 | 46 | Friday, May 30 | boxscore | PIT | HOU | L | 6 | 9 | 23-23 | 2 | 7.5 | Billingham | Hartenstein | Gladding | 3:10 | 18,381 | - | ||
| 47 | 47 | Saturday, May 31 | boxscore | PIT | HOU | W | 3 | 1 | 24-23 | 2 | 7.5 | Ellis | Ray | Kline | 2:43 | 6,663 | + | ||
| 48 | 48 | Sunday, Jun 1 | boxscore | PIT | HOU | W | 14 | 7 | 25-23 | 2 | 7.5 | Blass | Wilson | 2:51 | 21,023 | ++ | |||
| 49 | 49 | Tuesday, Jun 3 | boxscore | PIT | CIN | L | 3 | 7 | 25-24 | 2 | 8.5 | Merritt | Veale | 2:17 | 4,576 | - | |||
| 50 | 50 | Wednesday, Jun 4 | boxscore | PIT | CIN | L | 3 | 5 | 25-25 | 3 | 9.5 | Carroll | Hartenstein | Granger | 2:18 | 6,685 | -- | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 51 | 51 | Friday, Jun 6 | boxscore | PIT | @ | ATL | L | 1 | 3 | 25-26 | 3 | 10.5 | Niekro | Ellis | 2:14 | 17,049 | --- | ||
| 52 | 52 | Saturday, Jun 7 | boxscore | PIT | @ | ATL | W | 10 | 2 | 26-26 | 3 | 10.0 | Blass | Jarvis | 2:14 | 21,120 | + | ||
| 53 | 53 | Sunday, Jun 8 | boxscore | PIT | @ | ATL | L | 10 | 11 | 26-27 | 3 | 11.0 | Niekro | Hartenstein | 2:57 | 0 | - | ||
| 54 | 54 | Sunday, Jun 8 | boxscore | PIT | @ | ATL | L | 3 | 4 | 26-28 | 3 | 11.0 | Pappas | Veale | 2:15 | 27,318 | -- | ||
| 55 | 55 | Tuesday, Jun 10 | boxscore | PIT | @ | HOU | L | 4 | 7 | 26-29 | 3 | 11.5 | Griffin | Ellis | 2:43 | 14,660 | --- | ||
| 56 | 56 | Wednesday, Jun 11 | boxscore | PIT | @ | HOU | W | 13 | 8 | 27-29 | 3 | 10.5 | Blass | Guinn | Hartenstein | 3:13 | 15,871 | + | |
| 57 | 57 | Thursday, Jun 12 | boxscore | PIT | @ | HOU | W | 4 | 3 | 28-29 | 3 | 10.5 | Bunning | Gladding | 2:32 | 14,260 | ++ | ||
| 58 | 58 | Friday, Jun 13 | boxscore | PIT | ATL | W | 2 | 1 | 10 | 29-29 | 3 | 10.5 | Dal Canton | Pappas | 2:07 | 11,610 | +++ | ||
| 59 | 59 | Saturday, Jun 14 | boxscore | PIT | ATL | W | 4 | 2 | 30-29 | 3 | 10.5 | Moose | Upshaw | 2:31 | 18,283 | ++++ | |||
| 60 | 60 | Sunday, Jun 15 | boxscore | PIT | ATL | L | 4 | 6 | 30-30 | 3 | 11.0 | Reed | Blass | Upshaw | 2:57 | 19,974 | - | ||
| 61 | 61 | Monday, Jun 16 | boxscore | PIT | CHC | W | 9 | 8 | 31-30 | 3 | 10.0 | Dal Canton | Regan | Blass | 2:47 | 8,810 | + | ||
| 62 | 62 | Tuesday, Jun 17 | boxscore | PIT | CHC | W | 1 | 0 | 32-30 | 3 | 8.0 | Veale | Jenkins | Dal Canton | 2:30 | 0 | ++ | ||
| 63 | 63 | Tuesday, Jun 17 | boxscore | PIT | CHC | W | 4 | 3 | 33-30 | 3 | 8.0 | Blass | Abernathy | 2:45 | 26,817 | +++ | |||
| 64 | 64 | Wednesday, Jun 18 | boxscore | PIT | CHC | W | 3 | 2 | 10 | 34-30 | 3 | 7.0 | Gibbon | Regan | 2:56 | 12,198 | ++++ | ||
| 65 | 65 | Friday, Jun 20 | boxscore | PIT | @ | PHI | L | 7 | 8 | 34-31 | 3 | 8.0 | Wilson | Marone | Boozer | 2:54 | 10,669 | - | |
| 66 | 66 | Saturday, Jun 21 | boxscore | PIT | @ | PHI | W | 8 | 2 | 35-31 | 3 | 7.0 | Dal Canton | Palmer | 2:38 | 5,469 | + | ||
| 67 | 67 | Sunday, Jun 22 | boxscore | PIT | @ | PHI | W | 6 | 0 | 36-31 | 3 | 7.0 | Ellis | Champion | 2:23 | 0 | ++ | ||
| 68 | 68 | Sunday, Jun 22 | boxscore | PIT | @ | PHI | L | 2 | 3 | 36-32 | 3 | 7.0 | Jackson | Blass | 1:44 | 33,712 | - | ||
| 69 | 69 | Monday, Jun 23 | boxscore | PIT | @ | CHC | L | 4 | 5 | 36-33 | 3 | 8.0 | Regan | Dal Canton | 2:52 | 12,500 | -- | ||
| 70 | 70 | Tuesday, Jun 24 | boxscore | PIT | @ | CHC | L | 2 | 3 | 36-34 | 3 | 9.0 | Hands | Bunning | 2:05 | 17,530 | --- | ||
| 71 | 71 | Wednesday, Jun 25 | boxscore | PIT | @ | CHC | L | 2 | 5 | 36-35 | 3 | 10.0 | Jenkins | Veale | 2:08 | 26,434 | ---- | ||
| 72 | 72 | Thursday, Jun 26 | boxscore | PIT | @ | CHC | L | 5 | 7 | 10 | 36-36 | 3 | 11.0 | Regan | Dal Canton | 3:05 | 29,473 | ----- | |
| 73 | 73 | Friday, Jun 27 | boxscore | PIT | @ | NYM | W | 3 | 1 | 37-36 | 3 | 10.0 | Blass | Koosman | Gibbon | 2:44 | 42,276 | + | |
| 74 | 74 | Saturday, Jun 28 | boxscore | PIT | @ | NYM | W | 7 | 4 | 38-36 | 3 | 10.0 | Bunning | Gentry | Gibbon | 2:50 | 48,398 | ++ | |
| 75 | 75 | Sunday, Jun 29 | boxscore | PIT | @ | NYM | L | 3 | 7 | 38-37 | 3 | 11.5 | Seaver | Veale | 2:20 | 27,455 | - | ||
| 76 | 76 | Monday, Jun 30 | boxscore | PIT | PHI | L | 2 | 4 | 38-38 | 3 | 11.5 | Fryman | Ellis | Boozer | 2:21 | 17,954 | -- | ||
| 77 | 77 | Tuesday, Jul 1 | boxscore | PIT | PHI | L | 4 | 7 | 38-39 | 3 | 11.5 | Jackson | Blass | Wilson | 2:23 | 6,652 | --- | ||
| 78 | 78 | Wednesday, Jul 2 | boxscore | PIT | PHI | L | 4 | 14 | 38-40 | 3 | 12.5 | Raffo | Bunning | Boozer | 2:43 | 6,322 | ---- | ||
| 79 | 79 | Friday, Jul 4 | boxscore | PIT | NYM | L | 6 | 11 | 38-41 | 3 | 14.5 | Seaver | Veale | Koonce | 2:57 | 0 | ----- | ||
| 80 | 80 | Friday, Jul 4 | boxscore | PIT | NYM | L | 2 | 9 | 38-42 | 3 | 14.5 | Cardwell | Ellis | Dilauro | 2:28 | 17,631 | ------ | ||
| 81 | 81 | Sunday, Jul 6 | boxscore | PIT | NYM | L | 7 | 8 | 38-43 | 4 | 13.5 | Taylor | Hartenstein | Koonce | 2:55 | 11,552 | ------- | ||
| 82 | 82 | Tuesday, Jul 8 | boxscore | PIT | MON | W | 8 | 1 | 39-43 | 4 | 12.5 | Blass | Wegener | 2:21 | 4,930 | + | |||
| 83 | 83 | Wednesday, Jul 9 | boxscore | PIT | MON | W | 4 | 3 | 10 | 40-43 | 3 | 11.0 | Gibbon | Radatz | 2:55 | 0 | ++ | ||
| 84 | 84 | Wednesday, Jul 9 | boxscore | PIT | MON | W | 3 | 2 | 41-43 | 3 | 11.0 | Ellis | Reed | Gibbon | 2:14 | 9,372 | +++ | ||
| 85 | 85 | Thursday, Jul 10 | boxscore | PIT | MON | W | 2 | 1 | 11 | 42-43 | 3 | 11.0 | Hartenstein | McGinn | 3:24 | 4,982 | ++++ | ||
| 86 | 86 | Friday, Jul 11 | boxscore | PIT | @ | STL | L | 1 | 6 | 42-44 | 4 | 11.0 | Carlton | Walker | 2:29 | 24,910 | - | ||
| 87 | 87 | Saturday, Jul 12 | boxscore | PIT | @ | STL | L | 3 | 6 | 42-45 | 4 | 12.0 | Washburn | Blass | 2:20 | 17,950 | -- | ||
| 88 | 88 | Sunday, Jul 13 | boxscore | PIT | @ | STL | W | 3 | 0 | 43-45 | 4 | 13.0 | Bunning | Gibson | Moose | 2:09 | 0 | + | |
| 89 | 89 | Sunday, Jul 13 | boxscore | PIT | @ | STL | L | 2 | 4 | 43-46 | 4 | 13.0 | Briles | Ellis | Hoerner | 2:24 | 36,469 | - | |
| 90 | 90 | Monday, Jul 14 | boxscore | PIT | @ | MON | L | 0 | 2 | 43-47 | 4 | 14.0 | Stoneman | Veale | 2:18 | 20,054 | -- | ||
| 91 | 91 | Tuesday, Jul 15 | boxscore | PIT | @ | MON | W | 9 | 3 | 44-47 | 4 | 13.0 | Walker | Waslewski | 2:22 | 20,876 | + | ||
| 92 | 92 | Wednesday, Jul 16 | boxscore | PIT | @ | MON | W | 8 | 7 | 45-47 | 4 | 12.0 | Gibbon | McGinn | Hartenstein | 3:02 | 24,214 | ++ | |
| 93 | 93 | Thursday, Jul 17 | boxscore | PIT | @ | MON | L | 4 | 5 | 45-48 | 4 | 12.5 | Shaw | Bunning | 2:35 | 11,935 | - | ||
| 94 | 94 | Friday, Jul 18 | boxscore | PIT | STL | W | 4 | 1 | 46-48 | 4 | 12.5 | Ellis | Gibson | 2:12 | 13,666 | + | |||
| 95 | 95 | Saturday, Jul 19 | boxscore | PIT | STL | W | 3 | 2 | 47-48 | 4 | 11.5 | Veale | Briles | Gibbon | 2:14 | 8,915 | ++ | ||
| 96 | 96 | Thursday, Jul 24 | boxscore | PIT | SDP | W | 4 | 3 | 10 | 48-48 | 4 | 12.5 | Ellis | Ross | 2:27 | 6,206 | +++ | ||
| 97 | 97 | Friday, Jul 25 | boxscore | PIT | SDP | L | 2 | 3 | 48-49 | 4 | 12.5 | Niekro | Blass | 2:19 | 7,404 | - | |||
| 98 | 98 | Saturday, Jul 26 | boxscore | PIT | SDP | W | 4 | 3 | 10 | 49-49 | 4 | 12.5 | Moose | McCool | 2:26 | 6,769 | + | ||
| 99 | 99 | Sunday, Jul 27 | boxscore | PIT | SDP | W | 4 | 1 | 50-49 | 4 | 11.5 | Bunning | Kirby | Moose | 2:12 | 14,888 | ++ | ||
| 100 | 100 | Tuesday, Jul 29 | boxscore | PIT | LAD | W | 4 | 2 | 10 | 51-49 | 4 | 11.5 | Gibbon | McBean | 2:45 | 0 | +++ | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 101 | 101 | Tuesday, Jul 29 | boxscore | PIT | LAD | L | 5 | 6 | 51-50 | 4 | 11.5 | Mikkelsen | Ellis | 2:50 | 18,436 | - | |||
| 102 | 102 | Wednesday, Jul 30 | boxscore | PIT | LAD | W | 4 | 2 | 52-50 | 4 | 10.5 | Blass | Osteen | 2:39 | 8,833 | + | |||
| 103 | 103 | Thursday, Jul 31 | boxscore | PIT | LAD | W | 2 | 1 | 15 | 53-50 | 4 | 10.5 | Hartenstein | McBean | 3:43 | 8,605 | ++ | ||
| 104 | 104 | Friday, Aug 1 | boxscore | PIT | SFG | L | 1 | 5 | 53-51 | 4 | 11.5 | McCormick | Bunning | 2:14 | 10,500 | - | |||
| 105 | 105 | Saturday, Aug 2 | boxscore | PIT | SFG | W | 7 | 3 | 54-51 | 4 | 11.5 | Veale | Marichal | 2:36 | 12,566 | + | |||
| 106 | 106 | Sunday, Aug 3 | boxscore | PIT | SFG | L | 2 | 3 | 54-52 | 4 | 12.5 | Perry | Ellis | 2:22 | 14,841 | - | |||
| 107 | 107 | Tuesday, Aug 5 | boxscore | PIT | @ | LAD | W | 11 | 3 | 55-52 | 4 | 13.0 | Blass | Foster | 2:11 | 22,604 | + | ||
| 108 | 108 | Wednesday, Aug 6 | boxscore | PIT | @ | LAD | L | 5 | 7 | 55-53 | 4 | 14.0 | Sutton | Walker | Brewer | 3:01 | 18,347 | - | |
| 109 | 109 | Thursday, Aug 7 | boxscore | PIT | @ | LAD | L | 0 | 6 | 55-54 | 4 | 14.5 | Osteen | Bunning | 2:18 | 20,475 | -- | ||
| 110 | 110 | Friday, Aug 8 | boxscore | PIT | @ | SDP | W | 7 | 1 | 56-54 | 4 | 13.5 | Veale | Niekro | 2:39 | 6,061 | + | ||
| 111 | 111 | Sunday, Aug 10 | boxscore | PIT | @ | SDP | W | 7 | 5 | 57-54 | 4 | 12.5 | Ellis | Kelley | Gibbon | 2:42 | 0 | ++ | |
| 112 | 112 | Sunday, Aug 10 | boxscore | PIT | @ | SDP | W | 8 | 6 | 58-54 | 4 | 12.5 | Blass | Kirby | Gibbon | 2:32 | 10,073 | +++ | |
| 113 | 113 | Tuesday, Aug 12 | boxscore | PIT | @ | SFG | L | 3 | 6 | 58-55 | 4 | 13.5 | Perry | Walker | 2:26 | 5,496 | - | ||
| 114 | 114 | Wednesday, Aug 13 | boxscore | PIT | @ | SFG | W | 10 | 5 | 59-55 | 4 | 13.5 | Bunning | McCormick | Moose | 2:40 | 5,966 | + | |
| 115 | 115 | Friday, Aug 15 | boxscore | PIT | @ | CIN | W | 5 | 1 | 60-55 | 4 | 12.5 | Veale | Nolan | 2:15 | 21,314 | ++ | ||
| 116 | 116 | Saturday, Aug 16 | boxscore | PIT | @ | CIN | L | 2 | 5 | 60-56 | 4 | 13.5 | Merritt | Ellis | 2:11 | 13,218 | - | ||
| 117 | 117 | Sunday, Aug 17 | boxscore | PIT | @ | CIN | W | 8 | 5 | 61-56 | 4 | 13.0 | Blass | Fisher | Hartenstein | 2:40 | 20,732 | + | |
| 118 | 118 | Monday, Aug 18 | boxscore | PIT | @ | CIN | W | 12 | 5 | 10 | 62-56 | 4 | 12.5 | Dal Canton | Granger | 3:17 | 16,657 | ++ | |
| 119 | 119 | Tuesday, Aug 19 | boxscore | PIT | HOU | W | 5 | 1 | 63-56 | 4 | 12.5 | Walker | Wilson | Gibbon | 2:25 | 5,409 | +++ | ||
| 120 | 120 | Wednesday, Aug 20 | boxscore | PIT | HOU | W | 1 | 0 | 64-56 | 4 | 11.5 | Veale | Lemaster | 2:02 | 10,563 | ++++ | |||
| 121 | 121 | Friday, Aug 22 | boxscore | PIT | CIN | W | 8 | 2 | 65-56 | 4 | 9.5 | Ellis | Fisher | 2:21 | 0 | +++++ | |||
| 122 | 122 | Friday, Aug 22 | boxscore | PIT | CIN | W | 5 | 3 | 66-56 | 4 | 9.5 | Dal Canton | Carroll | 2:55 | 28,184 | ++++++ | |||
| 123 | 123 | Saturday, Aug 23 | boxscore | PIT | CIN | W | 3 | 1 | 67-56 | 4 | 9.5 | Moose | Arrigo | Hartenstein | 2:33 | 16,283 | +++++++ | ||
| 124 | 124 | Sunday, Aug 24 | boxscore | PIT | CIN | W | 9 | 4 | 68-56 | 3 | 9.0 | Veale | Maloney | Dal Canton | 2:38 | 16,506 | ++++++++ | ||
| 125 | 125 | Tuesday, Aug 26 | boxscore | PIT | ATL | L | 4 | 6 | 68-57 | 4 | 8.5 | Reed | Walker | Doyle | 2:33 | 15,449 | - | ||
| 126 | 126 | Wednesday, Aug 27 | boxscore | PIT | ATL | L | 0 | 1 | 68-58 | 4 | 8.5 | Niekro | Ellis | 2:05 | 11,454 | -- | |||
| 127 | 127 | Thursday, Aug 28 | boxscore | PIT | ATL | L | 2 | 8 | 68-59 | 4 | 9.5 | Stone | Blass | Doyle | 2:24 | 10,767 | --- | ||
| 128 | 128 | Friday, Aug 29 | boxscore | PIT | @ | HOU | W | 4 | 2 | 10 | 69-59 | 4 | 9.5 | Moose | Bouton | 2:53 | 20,405 | + | |
| 129 | 129 | Saturday, Aug 30 | boxscore | PIT | @ | HOU | L | 1 | 2 | 69-60 | 4 | 10.5 | Dierker | Belinsky | 2:52 | 27,747 | - | ||
| 130 | 130 | Sunday, Aug 31 | boxscore | PIT | @ | HOU | W | 6 | 4 | 70-60 | 3 | 10.5 | Marone | Gladding | Blass | 2:54 | 24,722 | + | |
| 131 | 131 | Monday, Sep 1 | boxscore | PIT | @ | ATL | W | 7 | 1 | 71-60 | 3 | 10.0 | Moose | Britton | 2:16 | 10,479 | ++ | ||
| 132 | 132 | Wednesday, Sep 3 | boxscore | PIT | @ | ATL | L | 1 | 8 | 71-61 | 3 | 10.5 | Reed | Ellis | Upshaw | 2:26 | 6,317 | - | |
| 133 | 133 | Friday, Sep 5 | boxscore | PIT | @ | CHC | W | 9 | 2 | 72-61 | 3 | 9.5 | Blass | Holtzman | 2:20 | 10,411 | + | ||
| 134 | 134 | Saturday, Sep 6 | boxscore | PIT | @ | CHC | W | 13 | 4 | 73-61 | 3 | 8.5 | Veale | Jenkins | 2:53 | 24,566 | ++ | ||
| 135 | 135 | Sunday, Sep 7 | boxscore | PIT | @ | CHC | W | 7 | 5 | 11 | 74-61 | 3 | 7.5 | Dal Canton | Johnson | 3:20 | 28,698 | +++ | |
| 136 | 136 | Monday, Sep 8 | boxscore | PIT | @ | MON | W | 6 | 2 | 75-61 | 3 | 6.5 | Hartenstein | Raymond | Dal Canton | 2:31 | 9,526 | ++++ | |
| 137 | 137 | Tuesday, Sep 9 | boxscore | PIT | @ | MON | L | 2 | 4 | 75-62 | 3 | 6.5 | Renko | Walker | 2:02 | 9,129 | - | ||
| 138 | 138 | Wednesday, Sep 10 | boxscore | PIT | STL | L | 2 | 11 | 75-63 | 4 | 8.0 | Gibson | Blass | 2:21 | 0 | -- | |||
| 139 | 139 | Wednesday, Sep 10 | boxscore | PIT | STL | L | 1 | 2 | 75-64 | 4 | 8.0 | Torrez | Belinsky | Grant | 2:13 | 11,898 | --- | ||
| 140 | 140 | Thursday, Sep 11 | boxscore | PIT | STL | W | 3 | 2 | 76-64 | 3 | 8.0 | Veale | Carlton | 2:10 | 4,579 | + | |||
| 141 | 141 | Friday, Sep 12 | boxscore | PIT | NYM | L | 0 | 1 | 76-65 | 3 | 10.0 | Koosman | Moose | 2:19 | 0 | - | |||
| 142 | 142 | Friday, Sep 12 | boxscore | PIT | NYM | L | 0 | 1 | 76-66 | 3 | 10.0 | Cardwell | Ellis | McGraw | 2:02 | 19,303 | -- | ||
| 143 | 143 | Saturday, Sep 13 | boxscore | PIT | NYM | L | 2 | 5 | 76-67 | 4 | 11.0 | Seaver | Walker | 2:37 | 10,440 | --- | |||
| 144 | 144 | Sunday, Sep 14 | boxscore | PIT | NYM | W | 5 | 3 | 77-67 | 4 | 10.0 | Blass | Ryan | 2:11 | 11,324 | + | |||
| 145 | 145 | Monday, Sep 15 | boxscore | PIT | @ | PHI | L | 1 | 2 | 77-68 | 4 | 11.5 | Wise | Veale | 2:10 | 0 | - | ||
| 146 | 146 | Monday, Sep 15 | boxscore | PIT | @ | PHI | L | 3 | 4 | 77-69 | 4 | 11.5 | James | Belinsky | 2:15 | 2,933 | -- | ||
| 147 | 147 | Tuesday, Sep 16 | boxscore | PIT | @ | PHI | W | 9 | 5 | 78-69 | 4 | 11.0 | Moose | Fryman | Gibbon | 2:31 | 1,169 | + | |
| 148 | 148 | Wednesday, Sep 17 | boxscore | PIT | @ | STL | W | 4 | 2 | 79-69 | 3 | 11.0 | Ellis | Taylor | 2:11 | 11,646 | ++ | ||
| 149 | 149 | Thursday, Sep 18 | boxscore | PIT | @ | STL | L | 7 | 8 | 79-70 | 4 | 12.0 | Campisi | Gibbon | 2:36 | 8,612 | - | ||
| 150 | 150 | Friday, Sep 19 | boxscore | PIT | @ | NYM | W | 8 | 2 | 80-70 | 3 | 10.0 | Veale | Ryan | 2:47 | 0 | + | ||
| Rk | Gm# | Date | Tm | Opp | R | RA | Inn | W-L | Rank | GB | Win | Loss | Save | Time | Attendance | Streak | |||
| 151 | 151 | Friday, Sep 19 | boxscore | PIT | @ | NYM | W | 8 | 0 | 81-70 | 3 | 10.0 | Walker | McAndrew | 2:25 | 51,885 | ++ | ||
| 152 | 152 | Saturday, Sep 20 | boxscore | PIT | @ | NYM | W | 4 | 0 | 82-70 | 3 | 9.0 | Moose | Gentry | 2:08 | 38,784 | +++ | ||
| 153 | 153 | Sunday, Sep 21 | boxscore | PIT | @ | NYM | L | 3 | 5 | 82-71 | 4 | 11.0 | Koosman | Ellis | 2:14 | 0 | - | ||
| 154 | 154 | Sunday, Sep 21 | boxscore | PIT | @ | NYM | L | 1 | 6 | 82-72 | 4 | 11.0 | Cardwell | Blass | 2:23 | 55,901 | -- | ||
| 155 | 155 | Tuesday, Sep 23 | boxscore | PIT | PHI | L | 3 | 4 | 82-73 | 3 | 12.5 | Jackson | Veale | Johnson | 2:03 | 2,364 | --- | ||
| 156 | 156 | Thursday, Sep 25 | boxscore | PIT | PHI | W | 5 | 3 | 83-73 | 3 | 12.0 | Walker | Wise | 1:59 | 0 | + | |||
| 157 | 157 | Thursday, Sep 25 | boxscore | PIT | PHI | W | 9 | 7 | 84-73 | 3 | 12.0 | Moose | James | Gibbon | 2:44 | 2,379 | ++ | ||
| 158 | 158 | Friday, Sep 26 | boxscore | PIT | CHC | W | 2 | 0 | 85-73 | 3 | 12.0 | Ellis | Jenkins | 1:45 | 4,973 | +++ | |||
| 159 | 159 | Saturday, Sep 27 | boxscore | PIT | CHC | W | 4 | 1 | 86-73 | 3 | 12.0 | Blass | Holtzman | Moose | 2:25 | 4,157 | ++++ | ||
| 160 | 160 | Sunday, Sep 28 | boxscore | PIT | CHC | L | 1 | 3 | 86-74 | 3 | 13.0 | Hands | Veale | 2:09 | 24,435 | - | |||
| 161 | 161 | Wednesday, Oct 1 | boxscore | PIT | MON | W | 5 | 4 | 87-74 | 3 | 13.0 | Gibbon | Reed | 2:39 | 2,496 | + | |||
| 162 | 162 | Thursday, Oct 2 | boxscore | PIT | MON | W | 8 | 2 | 88-74 | 3 | 12.0 | Moose | Robertson | 2:15 | 2,700 | ++ | |||
| 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.