| 1915 Game Log: 73â81 (Home: 40â37; Away: 33â44) |
April: 5â9 (Home: 1â2; Away: 4â7)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 1 | April 14 | @ Reds | 9â2 | McQuillan (1â0) | Ames | â | 24,000 | 1â0 |
| 2 | April 15 | @ Reds | 1â2 | Benton | Harmon (0â1) | â | 3,000 | 1â1 |
| 3 | April 16 | @ Reds | 2â4 | Douglas | Vance (0â1) | Dale | â | 1â2 |
| 4 | April 17 | @ Reds | 3â2 | Mamaux (1â0) | Brown | â | â | 2â2 |
| 5 | April 18 | @ Cubs | 1â2 (10) | Vaughn | Cooper (0â1) | â | â | 2â3 |
| 6 | April 19 | @ Cubs | 7â8 | Pierce | Harmon (0â2) | â | â | 2â4 |
| 7 | April 20 | @ Cubs | 8â6 | Mamaux (2â0) | Cheney | McQuillan (1) | 2,000 | 3â4 |
| 8 | April 22 | Reds | 8â2 | Adams (1â0) | Douglas | â | â | 4â4 |
| 9 | April 23 | Reds | 1â2 | Dale | Cooper (0â2) | Benton | 2,500 | 4â5 |
| 10 | April 24 | Reds | 1â1 (8) | | | â | 10,000 | 4â5 |
| 11 | April 25 | @ Cardinals | 1â8 | Doak | Kantlehner (0â1) | â | 12,000 | 4â6 |
| 12 | April 26 | @ Cardinals | 0â3 | Perdue | Adams (1â1) | â | â | 4â7 |
| 13 | April 27 | @ Cardinals | 0â3 | Griner | Mamaux (2â1) | â | â | 4â8 |
| 14 | April 28 | @ Cardinals | 7â6 (8) | Harmon (1â2) | Sallee | Cooper (1) | â | 5â8 |
| 15 | April 30 | Cubs | 1â4 | Zabel | Cooper (0â3) | â | â | 5â9 |
|
May: 13â10 (Home: 7â2; Away: 6â8)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 16 | May 1 | Cubs | 1â3 | Standridge | Adams (1â2) | â | 2,000 | 5â10 |
| 17 | May 2 | @ Cubs | 1â7 (8) | Vaughn | McQuillan (1â1) | â | â | 5â11 |
| 18 | May 3 | @ Cubs | 1â5 (5) | Pierce | Cooper (0â4) | Humphries | â | 5â12 |
| 19 | May 4 | Cardinals | 4â3 (8) | Harmon (2â2) | Perdue | â | â | 6â12 |
| 20 | May 6 | Cardinals | 9â3 | Adams (2â2) | Meadows | â | â | 7â12 |
| 21 | May 7 | Cardinals | 6â4 | McQuillan (2â1) | Doak | â | â | 8â12 |
| 22 | May 8 | Cardinals | 3â2 | Mamaux (3â1) | Robinson | â | â | 9â12 |
| 23 | May 9 | @ Reds | 8â3 | Harmon (3â2) | Douglas | â | â | 10â12 |
| 24 | May 10 | Cubs | 10â7 | Conzelman (1â0) | Zabel | Adams (1) | â | 11â12 |
| 25 | May 11 | @ Phillies | 2â4 | Alexander | McQuillan (2â2) | â | â | 11â13 |
| 26 | May 13 | @ Phillies | 3â1 | Harmon (4â2) | Demaree | â | â | 12â13 |
| 27 | May 14 | @ Phillies | 3â5 | Rixey | Adams (2â3) | Mayer | â | 12â14 |
| 28 | May 15 | @ Braves | 10â6 | Cooper (1â4) | Rudolph | McQuillan (2) | â | 13â14 |
| 29 | May 18 | @ Braves | 2â3 | James | Harmon (4â3) | â | â | 13â15 |
| 30 | May 19 | @ Braves | 7â0 | Mamaux (4â1) | Ragan | â | â | 14â15 |
| 31 | May 20 | @ Giants | 6â2 | Adams (3â3) | Perritt | â | â | 15â15 |
| 32 | May 25 | @ Robins | 1â5 | Pfeffer | McQuillan (2â3) | â | â | 15â16 |
| 33 | May 27 | @ Robins | 0â2 | Dell | Cooper (1â5) | â | â | 15â17 |
| 34 | May 28 | @ Robins | 3â1 | Mamaux (5â1) | Coombs | â | â | 16â17 |
| 35 | May 29 | Cardinals | 0â0 (5) | | | â | â | 16â17 |
| 36 | May 29 | Cardinals | 3â5 | Meadows | McQuillan (2â4) | â | â | 16â18 |
| 37 | May 30 | @ Reds | 0â4 | Schneider | Harmon (4â4) | â | â | 16â19 |
| 38 | May 31 | Cubs | 1â0 | Cooper (2â5) | Lavender | â | â | 17â19 |
| 39 | May 31 | Cubs | 1â0 | Mamaux (6â1) | Cheney | â | 15,000 | 18â19 |
|
June: 13â9 (Home: 9â7; Away: 4â2)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 40 | June 1 | Cubs | 0â2 | Zabel | Adams (3â4) | â | â | 18â20 |
| 41 | June 4 | Robins | 2â8 | Pfeffer | Cooper (2â6) | â | â | 18â21 |
| 42 | June 5 | Robins | 11â0 | Mamaux (7â1) | Dell | â | 5,000 | 19â21 |
| 43 | June 7 | Robins | 6â1 | Adams (4â4) | Coombs | â | â | 20â21 |
| 44 | June 8 | Robins | 3â4 | Smith | McQuillan (2â5) | Pfeffer | 1,800 | 20â22 |
| 45 | June 9 | Braves | 7â3 | Mamaux (8â1) | Tyler | â | â | 21â22 |
| 46 | June 10 | Braves | 2â1 | Harmon (5â4) | Hughes | â | â | 22â22 |
| 47 | June 12 | Braves | 2â8 | Ragan | Adams (4â5) | â | â | 22â23 |
| 48 | June 14 | Phillies | 1â4 (11) | Alexander | Mamaux (8â2) | â | 3,500 | 22â24 |
| 49 | June 16 | Phillies | 2â1 | Harmon (6â4) | Chalmers | â | â | 23â24 |
| 50 | June 17 | Giants | 1â3 | Marquard | McQuillan (2â6) | â | â | 23â25 |
| 51 | June 18 | Giants | 7â5 | Mamaux (9â2) | Perritt | Adams (2) | â | 24â25 |
| 52 | June 19 | Giants | 4â0 | Harmon (7â4) | Tesreau | â | â | 25â25 |
| 53 | June 21 | Phillies | 4â3 (13) | Mamaux (10â2) | Rixey | â | â | 26â25 |
| 54 | June 22 | @ Reds | 3â1 | McQuillan (3â6) | Schneider | â | â | 27â25 |
| 55 | June 23 | @ Reds | 6â2 | Harmon (8â4) | Benton | â | â | 28â25 |
| 56 | June 24 | Reds | 3â5 | Toney | Mamaux (10â3) | â | â | 28â26 |
| 57 | June 26 | Reds | 6â3 | McQuillan (4â6) | Dale | â | 6,000 | 29â26 |
| 58 | June 29 | @ Cardinals | 8â5 | Adams (5â5) | Meadows | â | â | 30â26 |
| 59 | June 29 | @ Cardinals | 4â6 | Robinson | Cooper (2â7) | Griner | 10,000 | 30â27 |
| 60 | June 30 | @ Cardinals | 0â2 | Doak | Adams (5â6) | â | â | 30â28 |
| 61 | June 30 | @ Cardinals | 4â2 (10) | McQuillan (5â6) | Sallee | â | 8,000 | 31â28 |
|
July: 16â17 (Home: 5â4; Away: 11â13)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 62 | July 1 | @ Cubs | 4â0 | Mamaux (11â3) | Vaughn | â | 1,500 | 32â28 |
| 63 | July 2 | @ Cubs | 1â2 | Pierce | Harmon (8â5) | â | 2,000 | 32â29 |
| 64 | July 3 | @ Cubs | 5â6 | Humphries | Cooper (2â8) | Lavender | â | 32â30 |
| 65 | July 3 | @ Cubs | 4â2 | Adams (6â6) | Zabel | â | 12,000 | 33â30 |
| 66 | July 4 | @ Cubs | 5â8 | Cheney | McQuillan (5â7) | Lavender | â | 33â31 |
| 67 | July 5 | Cardinals | 1â3 | Doak | Mamaux (11â4) | â | â | 33â32 |
| 68 | July 5 | Cardinals | 5â0 | Harmon (9â5) | Meadows | â | â | 34â32 |
| 69 | July 6 | Cardinals | 1â2 | Griner | Kantlehner (0â2) | â | 1,200 | 34â33 |
| 70 | July 7 | Cubs | 4â7 | Lavender | Adams (6â7) | â | â | 34â34 |
| 71 | July 8 | @ Phillies | 2â0 | Mamaux (12â4) | Rixey | â | â | 35â34 |
| 72 | July 9 | @ Phillies | 1â2 | Alexander | Harmon (9â6) | â | â | 35â35 |
| 73 | July 10 | @ Phillies | 3â6 | Demaree | Adams (6â8) | â | 12,000 | 35â36 |
| 74 | July 12 | @ Phillies | 2â1 | McQuillan (6â7) | Mayer | Cooper (2) | â | 36â36 |
| 75 | July 12 | @ Phillies | 4â2 | Mamaux (13â4) | Chalmers | â | 13,000 | 37â36 |
| 76 | July 13 | @ Braves | 3â1 | Kantlehner (1â2) | Ragan | â | â | 38â36 |
| 77 | July 13 | @ Braves | 6â7 | Davis | Harmon (9â7) | Hughes | â | 38â37 |
| 78 | July 15 | @ Braves | 2â3 | Rudolph | Cooper (2â9) | â | â | 38â38 |
| 79 | July 16 | @ Braves | 5â6 (15) | Hughes | Adams (6â9) | â | â | 38â39 |
| 80 | July 17 | @ Robins | 5â3 | McQuillan (7â7) | Smith | Kantlehner (1) | â | 39â39 |
| 81 | July 17 | @ Robins | 3â7 (7) | Coombs | Conzelman (1â1) | â | 22,000 | 39â40 |
| 82 | July 19 | @ Robins | 0â3 | Rucker | Kantlehner (1â3) | â | â | 39â41 |
| 83 | July 20 | @ Robins | 6â2 | Harmon (10â7) | Douglas | â | â | 40â41 |
| 84 | July 23 | @ Giants | 6â1 | Adams (7â9) | Mathewson | â | â | 41â41 |
| 85 | July 23 | @ Giants | 4â3 | Mamaux (14â4) | Tesreau | Cooper (3) | 15,000 | 42â41 |
| 86 | July 24 | @ Giants | 4â8 | Marquard | Harmon (10â8) | â | â | 42â42 |
| 87 | July 24 | @ Giants | 2â4 | Perritt | Cooper (2â10) | â | â | 42â43 |
| 88 | July 26 | @ Giants | 2â1 | Adams (8â9) | Mathewson | â | â | 43â43 |
| 89 | July 26 | @ Giants | 0â3 | Tesreau | McQuillan (7â8) | â | 10,000 | 43â44 |
| 90 | July 27 | Giants | 8â1 | Mamaux (15â4) | Marquard | â | 4,000 | 44â44 |
| 91 | July 29 | Robins | 8â2 | Kantlehner (2â3) | Pfeffer | â | 2,500 | 45â44 |
| 92 | July 30 | Robins | 2â3 | Rucker | Harmon (10â9) | â | â | 45â45 |
| 93 | July 31 | Robins | 5â0 | Mamaux (16â4) | Appleton | â | â | 46â45 |
| 94 | July 31 | Robins | 5â4 (10) | McQuillan (8â8) | Pfeffer | â | 12,000 | 47â45 |
|
August: 11â20 (Home: 6â8; Away: 5â12)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 95 | August 3 | Braves | 4â5 | Ragan | Kantlehner (2â4) | Hughes | â | 47â46 |
| 96 | August 3 | Braves | 2â7 | Tyler | Harmon (10â10) | â | â | 47â47 |
| 97 | August 4 | Braves | 1â5 | Hughes | Mamaux (16â5) | â | â | 47â48 |
| 98 | August 5 | Phillies | 1â0 | Adams (9â9) | Alexander | â | â | 48â48 |
| 99 | August 6 | Phillies | 4â5 | Demaree | McQuillan (8â9) | Mayer | â | 48â49 |
| 100 | August 7 | Phillies | 9â0 | Mamaux (17â5) | Mayer | â | â | 49â49 |
| 101 | August 7 | Phillies | 6â0 | Harmon (11â10) | Rixey | â | â | 50â49 |
| 102 | August 10 | Giants | 8â2 | Adams (10â9) | Marquard | â | â | 51â49 |
| 103 | August 12 | Giants | 4â0 | Mamaux (18â5) | Tesreau | â | â | 52â49 |
| 104 | August 13 | Reds | 3â4 | McKenry | Harmon (11â11) | â | â | 52â50 |
| 105 | August 14 | Reds | 4â5 (11) | Lear | Kantlehner (2â5) | â | â | 52â51 |
| 106 | August 14 | Reds | 0â6 | Toney | McQuillan (8â10) | â | â | 52â52 |
| 107 | August 15 | @ Reds | 2â6 | Dale | Cooper (2â11) | â | â | 52â53 |
| 108 | August 15 | @ Reds | 2â6 | McKenry | Harmon (11â12) | â | â | 52â54 |
| 109 | August 16 | Reds | 5â4 | Kantlehner (3â5) | Lear | â | â | 53â54 |
| 110 | August 17 | Cubs | 4â6 | Zabel | Cooper (2â12) | â | â | 53â55 |
| 111 | August 18 | @ Phillies | 8â4 | Adams (11â9) | Mayer | â | â | 54â55 |
| 112 | August 19 | @ Phillies | 8â3 | Harmon (12â12) | Demaree | â | â | 55â55 |
| 113 | August 20 | @ Phillies | 3â4 (11) | Alexander | Cooper (2â13) | â | â | 55â56 |
| 114 | August 21 | @ Braves | 1â3 | Rudolph | Kantlehner (3â6) | â | â | 55â57 |
| 115 | August 21 | @ Braves | 0â2 | Nehf | Mamaux (18â6) | â | 20,000 | 55â58 |
| 116 | August 23 | @ Braves | 2â3 | Hughes | Adams (11â10) | â | â | 55â59 |
| 117 | August 24 | @ Braves | 0â10 | Ragan | Cooper (2â14) | â | â | 55â60 |
| 118 | August 25 | @ Giants | 3â5 | Perritt | Harmon (12â13) | â | â | 55â61 |
| 119 | August 25 | @ Giants | 9â7 | Mamaux (19â6) | Benton | Kantlehner (2) | â | 56â61 |
| 120 | August 26 | @ Giants | 2â1 | Kantlehner (4â6) | Stroud | â | â | 57â61 |
| 121 | August 27 | @ Giants | 1â2 | Mathewson | Adams (11â11) | â | â | 57â62 |
| 122 | August 28 | @ Robins | 1â2 | Rucker | Harmon (12â14) | â | â | 57â63 |
| 123 | August 28 | @ Robins | 0â3 | Pfeffer | Kantlehner (4â7) | â | 13,000 | 57â64 |
| 124 | August 31 | @ Robins | 5â3 | Kelly (1â0) | Coombs | Cooper (4) | â | 58â64 |
| 125 | August 31 | @ Robins | 2â3 | Marquard | Kantlehner (4â8) | â | â | 58â65 |
|
September: 14â14 (Home: 12â14; Away: 2â0)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 126 | September 1 | Cardinals | 0â4 | Sallee | Adams (11â12) | â | â | 58â66 |
| 127 | September 1 | Cardinals | 7â0 | Harmon (13â14) | Perdue | â | â | 59â66 |
| 128 | September 2 | Cardinals | 2â7 | Doak | Kelly (1â1) | â | â | 59â67 |
| 129 | September 3 | Cubs | 4â1 | Mamaux (20â6) | Humphries | â | â | 60â67 |
| 130 | September 4 | Cubs | 2â5 | Vaughn | Kantlehner (4â9) | â | â | 60â68 |
| 131 | September 4 | Cubs | 2â1 (12) | Adams (12â12) | Lavender | â | 7,000 | 61â68 |
| 132 | September 5 | @ Cubs | 13â2 | Cooper (3â14) | Adams | â | â | 62â68 |
| 133 | September 6 | Reds | 0â3 | Schneider | Mamaux (20â7) | â | â | 62â69 |
| 134 | September 6 | Reds | 5â2 | Harmon (14â14) | McKenry | â | 8,000 | 63â69 |
| 135 | September 7 | Reds | 3â6 | Toney | Adams (12â13) | â | â | 63â70 |
| 136 | September 10 | Braves | 8â1 | Adams (13â13) | Nehf | â | â | 64â70 |
| 137 | September 10 | Braves | 2â3 (10) | Rudolph | Kantlehner (4â10) | â | 4,500 | 64â71 |
| 138 | September 11 | Phillies | 2â3 | Mayer | Harmon (14â15) | â | â | 64â72 |
| 139 | September 13 | Phillies | 2â4 (13) | Alexander | Cooper (3â15) | â | â | 64â73 |
| 140 | September 14 | Phillies | 3â4 | Chalmers | Adams (13â14) | â | â | 64â74 |
| 141 | September 15 | Phillies | 1â0 | Kantlehner (5â10) | Mayer | â | â | 65â74 |
| 142 | September 16 | Giants | 4â8 | Tesreau | Harmon (14â16) | â | â | 65â75 |
| 143 | September 17 | Giants | 9â6 | Cooper (4â15) | Benton | â | â | 66â75 |
| 144 | September 17 | Giants | 5â0 | Hill (1â0) | Perritt | â | â | 67â75 |
| 145 | September 18 | Giants | 8â2 | Mamaux (21â7) | Mathewson | â | â | 68â75 |
| 146 | September 18 | Giants | 2â7 | Tesreau | Kantlehner (5â11) | â | â | 68â76 |
| 147 | September 20 | Robins | 1â0 | Harmon (15â16) | Pfeffer | â | â | 69â76 |
| 148 | September 22 | Robins | 2â4 | Rucker | Cooper (4â16) | â | â | 69â77 |
| 149 | September 22 | Robins | 2â1 | Hill (2â0) | Cheney | â | â | 70â77 |
| 150 | September 23 | Braves | 8â4 | Cooper (5â16) | Rudolph | â | â | 71â77 |
| 151 | September 24 | Braves | 0â2 | Nehf | Kantlehner (5â12) | â | â | 71â78 |
| 152 | September 25 | Braves | 2â5 | Hughes | Harmon (15â17) | â | â | 71â79 |
| 153 | September 30 | @ Cardinals | 6â5 (10) | Harmon (16â17) | Perdue | â | â | 72â79 |
|
October: 1â2 (Home: 0â0; Away: 1â2)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 154 | October 1 | @ Cardinals | 3â6 | Doak | Hill (2â1) | Sallee | â | 72â80 |
| 155 | October 2 | @ Cardinals | 1â3 | Ames | Mamaux (21â8) | â | â | 72â81 |
| 156 | October 3 | @ Reds | 5â3 | Adams (14â14) | Schneider | â | â | 73â81 |
|
Legend: = Win = Loss = Tie Bold = Pirates team member |