| 1921 Game Log: 90â63 (Home: 45â31; Away: 45â32) |
April: 11â3 (Home: 3â1; Away: 8â2)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 1 | April 13 | @ Reds | 3â5 | Luque | Adams (0â1) | â | 30,444 | 0â1 |
| 2 | April 14 | @ Reds | 7â2 | Cooper (1â0) | Marquard | â | â | 1â1 |
| 3 | April 15 | @ Reds | 3â1 | Hamilton (1â0) | Rixey | Yellow Horse (1) | â | 2â1 |
| 4 | April 16 | @ Reds | 7â3 | Ponder (1â0) | Brenton | â | â | 3â1 |
| 5 | April 18 | @ Cubs | 4â7 | Tyler | Zinn (0â1) | â | â | 3â2 |
| 6 | April 19 | @ Cubs | 14â2 | Hamilton (2â0) | Martin | â | â | 4â2 |
| 7 | April 20 | @ Cubs | 6â5 | Carlson (1â0) | Freeman | Glazner (1) | â | 5â2 |
| 8 | April 21 | Reds | 8â7 | Yellow Horse (1â0) | Brenton | â | â | 6â2 |
| 9 | April 22 | Reds | 6â1 | Zinn (1â1) | Luque | â | â | 7â2 |
| 10 | April 23 | Reds | 4â5 | Marquard | Hamilton (2â1) | â | â | 7â3 |
| 11 | April 24 | @ Reds | 7â2 | Adams (1â1) | Rixey | â | â | 8â3 |
| 12 | April 25 | @ Cardinals | 6â5 (10) | Ponder (2â0) | Pertica | â | â | 9â3 |
| 13 | April 27 | @ Cardinals | 7â4 | Hamilton (3â1) | May | Zinn (1) | â | 10â3 |
| 14 | April 29 | Cubs | 3â0 | Cooper (2â0) | York | â | â | 11â3 |
|
May: 18â7 (Home: 7â2; Away: 11â5)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 15 | May 1 | @ Cubs | 2â0 | Adams (2â1) | Vaughn | â | â | 12â3 |
| 16 | May 2 | @ Cubs | 4â3 | Glazner (1â0) | Martin | â | â | 13â3 |
| 17 | May 5 | Cardinals | 8â3 | Cooper (3â0) | Pertica | â | â | 14â3 |
| 18 | May 6 | Cardinals | 10â6 | Hamilton (4â1) | Haines | Zinn (2) | â | 15â3 |
| 19 | May 7 | Cardinals | 2â1 | Glazner (2â0) | Sherdel | â | â | 16â3 |
| 20 | May 8 | @ Reds | 0â1 | Rixey | Adams (2â2) | â | â | 16â4 |
| 21 | May 10 | @ Braves | 5â2 | Cooper (4â0) | Oeschger | â | â | 17â4 |
| 22 | May 11 | @ Braves | 0â1 (13) | Fillingim | Hamilton (4â2) | â | â | 17â5 |
| 23 | May 12 | @ Braves | 3â1 | Glazner (3â0) | Watson | â | â | 18â5 |
| 24 | May 14 | @ Phillies | 6â4 (10) | Cooper (5â0) | Smith | â | â | 19â5 |
| 25 | May 16 | @ Phillies | 0â3 | Causey | Hamilton (4â3) | Ring | â | 19â6 |
| 26 | May 17 | @ Phillies | 6â4 | Glazner (4â0) | Hubbell | â | â | 20â6 |
| 27 | May 18 | @ Robins | 11â2 | Cooper (6â0) | Ruether | â | 10,000 | 21â6 |
| 28 | May 19 | @ Robins | 7â5 | Adams (3â2) | Smith | â | 10,000 | 22â6 |
| 29 | May 20 | @ Robins | 3â2 | Hamilton (5â3) | Cadore | â | 8,000 | 23â6 |
| 30 | May 21 | @ Robins | 13â6 | Zinn (2â1) | Mitchell | Carlson (1) | 20,000 | 24â6 |
| 31 | May 22 | @ Giants | 8â6 | Cooper (7â0) | Sallee | â | 40,000 | 25â6 |
| 32 | May 24 | @ Giants | 3â5 | Nehf | Adams (3â3) | â | â | 25â7 |
| 33 | May 26 | Reds | 1â4 | Marquard | Hamilton (5â4) | â | â | 25â8 |
| 34 | May 27 | Reds | 5â4 | Cooper (8â0) | Rixey | â | â | 26â8 |
| 35 | May 28 | Reds | 4â3 | Adams (4â3) | Luque | â | â | 27â8 |
| 36 | May 29 | @ Reds | 3â4 (13) | Rixey | Carlson (1â1) | â | â | 27â9 |
| 37 | May 30 | Cubs | 13â0 | Zinn (3â1) | York | â | â | 28â9 |
| 38 | May 30 | Cubs | 6â3 | Yellow Horse (2â0) | Tyler | â | â | 29â9 |
| 39 | May 31 | Cubs | 6â7 (12) | Freeman | Hamilton (5â5) | â | â | 29â10 |
|
June: 17â12 (Home: 11â7; Away: 6â5)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 40 | June 1 | Cubs | 4â2 | Glazner (5â0) | Martin | â | â | 30â10 |
| 41 | June 2 | Giants | 0â7 | Nehf | Zinn (3â2) | â | 20,000 | 30â11 |
| 42 | June 3 | Giants | 1â4 | Toney | Hamilton (5â6) | â | 15,000 | 30â12 |
| 43 | June 4 | Giants | 0â12 | Douglas | Cooper (8â1) | â | 25,000 | 30â13 |
| 44 | June 6 | Giants | 5â4 | Adams (5â3) | Barnes | â | 9,000 | 31â13 |
| 45 | June 7 | Braves | 7â10 | Oeschger | Yellow Horse (2â1) | â | â | 31â14 |
| 46 | June 8 | Braves | 16â4 | Hamilton (6â6) | McQuillan | â | â | 32â14 |
| 47 | June 9 | Braves | 5â3 | Cooper (9â1) | Fillingim | â | â | 33â14 |
| 48 | June 10 | Braves | 1â4 | Scott | Glazner (5â1) | â | â | 33â15 |
| 49 | June 11 | Phillies | 10â3 | Adams (6â3) | Hubbell | â | â | 34â15 |
| 50 | June 13 | Phillies | 12â5 | Hamilton (7â6) | Baumgartner | â | â | 35â15 |
| 51 | June 14 | Phillies | 8â3 | Zinn (4â2) | Ring | â | â | 36â15 |
| 52 | June 15 | Robins | 3â7 | Grimes | Cooper (9â2) | â | 7,000 | 36â16 |
| 53 | June 16 | Robins | 6â5 (17) | Yellow Horse (3â1) | Mamaux | â | 5,000 | 37â16 |
| 54 | June 17 | Robins | 3â8 | Cadore | Hamilton (7â7) | â | 8,000 | 37â17 |
| 55 | June 18 | Robins | 4â3 | Cooper (10â2) | Ruether | â | 18,000 | 38â17 |
| 56 | June 20 | Phillies | 3â2 | Yellow Horse (4â1) | Meadows | Zinn (3) | â | 39â17 |
| 57 | June 22 | @ Reds | 5â2 (12) | Cooper (11â2) | Rixey | â | â | 40â17 |
| 58 | June 23 | @ Cardinals | 2â3 (12) | Walker | Carlson (1â2) | â | â | 40â18 |
| 59 | June 23 | @ Cardinals | 3â4 | Doak | Zinn (4â3) | â | â | 40â19 |
| 60 | June 24 | @ Cardinals | 4â3 (10) | Glazner (6â1) | Bailey | â | â | 41â19 |
| 61 | June 25 | @ Cardinals | 4â7 | Pfeffer | Yellow Horse (4â2) | North | â | 41â20 |
| 62 | June 25 | @ Cardinals | 5â2 | Cooper (12â2) | Pertica | â | â | 42â20 |
| 63 | June 26 | @ Cubs | 11â3 | Adams (7â3) | Alexander | â | â | 43â20 |
| 64 | June 27 | @ Cubs | 10â3 | Morrison (1â0) | Vaughn | â | â | 44â20 |
| 65 | June 28 | @ Cubs | 1â2 | Martin | Zinn (4â4) | â | â | 44â21 |
| 66 | June 28 | @ Cubs | 6â8 | Tyler | Carlson (1â3) | â | â | 44â22 |
| 67 | June 29 | @ Cubs | 3â1 | Cooper (13â2) | Cheeves | â | â | 45â22 |
| 68 | June 30 | Reds | 5â3 | Yellow Horse (5â2) | Luque | â | â | 46â22 |
|
July: 14â13 (Home: 5â6; Away: 9â7)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 69 | July 1 | Reds | 5â2 | Morrison (2â0) | Rixey | â | â | 47â22 |
| 70 | July 2 | Reds | 9â0 | Adams (8â3) | Brenton | â | â | 48â22 |
| 71 | July 3 | @ Reds | 2â8 | Marquard | Hamilton (7â8) | â | â | 48â23 |
| 72 | July 4 | Cardinals | 5â2 | Glazner (7â1) | Bailey | â | â | 49â23 |
| 73 | July 4 | Cardinals | 3â6 | Pertica | Cooper (13â3) | â | â | 49â24 |
| 74 | July 5 | Cardinals | 2â8 | Walker | Yellow Horse (5â3) | â | â | 49â25 |
| 75 | July 6 | Cardinals | 3â2 (13) | Morrison (3â0) | North | â | â | 50â25 |
| 76 | July 8 | @ Robins | 5â3 | Cooper (14â3) | Schupp | â | â | 51â25 |
| 77 | July 9 | @ Robins | 4â2 | Glazner (8â1) | Cadore | â | 8,000 | 52â25 |
| 78 | July 10 | @ Robins | 3â7 | Grimes | Morrison (3â1) | â | 10,000 | 52â26 |
| 79 | July 11 | @ Robins | 8â9 | Miljus | Hamilton (7â9) | â | 8,000 | 52â27 |
| 80 | July 12 | @ Phillies | 9â4 | Cooper (15â3) | Baumgartner | â | â | 53â27 |
| 81 | July 14 | @ Phillies | 5â4 (10) | Carlson (2â3) | Ring | â | â | 54â27 |
| 82 | July 16 | @ Giants | 4â13 | Douglas | Cooper (15â4) | â | 33,000 | 54â28 |
| 83 | July 17 | @ Giants | 4â2 (10) | Hamilton (8â9) | Causey | â | 36,000 | 55â28 |
| 84 | July 18 | @ Giants | 1â12 | Nehf | Morrison (3â2) | â | 10,000 | 55â29 |
| 85 | July 19 | @ Giants | 10â1 | Adams (9â3) | Ryan | â | 18,000 | 56â29 |
| 86 | July 20 | @ Braves | 2â0 | Cooper (16â4) | Oeschger | â | â | 57â29 |
| 87 | July 22 | @ Braves | 1â2 (10) | McQuillan | Hamilton (8â10) | â | â | 57â30 |
| 88 | July 22 | @ Braves | 4â3 (13) | Glazner (9â1) | Fillingim | â | â | 58â30 |
| 89 | July 23 | @ Braves | 3â2 | Cooper (17â4) | Watson | â | â | 59â30 |
| 90 | July 23 | @ Braves | 1â3 | Scott | Carlson (2â4) | â | â | 59â31 |
| 91 | July 25 | Giants | 6â3 | Adams (10â3) | Douglas | â | 20,000 | 60â31 |
| 92 | July 26 | Giants | 8â9 (10) | Barnes | Glazner (9â2) | â | 15,000 | 60â32 |
| 93 | July 27 | Giants | 1â4 | Nehf | Cooper (17â5) | â | â | 60â33 |
| 94 | July 28 | Giants | 4â6 | Douglas | Glazner (9â3) | Ryan | 15,000 | 60â34 |
| 95 | July 30 | Braves | 0â1 | Oeschger | Cooper (17â6) | â | â | 60â35 |
|
August: 18â12 (Home: 9â3; Away: 9â9)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 96 | August 1 | Braves | 7â3 | Adams (11â3) | McQuillan | â | â | 61â35 |
| 97 | August 3 | Phillies | 9â5 | Cooper (18â6) | Winters | â | â | 62â35 |
| 98 | August 4 | Phillies | 5â0 | Hamilton (9â10) | Meadows | â | â | 63â35 |
| 99 | August 5 | Phillies | 8â5 | Zinn (5â4) | Ring | â | â | 64â35 |
| 100 | August 6 | Robins | 2â3 | Cadore | Glazner (9â4) | â | 18,000 | 64â36 |
| 101 | August 8 | Robins | 2â4 | Grimes | Cooper (18â7) | â | 8,000 | 64â37 |
| 102 | August 9 | Robins | 4â2 | Adams (12â3) | Mitchell | Zinn (4) | 8,000 | 65â37 |
| 103 | August 10 | Robins | 0â1 | Cadore | Morrison (3â3) | â | 6,000 | 65â38 |
| 104 | August 11 | Cubs | 7â3 | Hamilton (10â10) | Alexander | â | â | 66â38 |
| 105 | August 11 | Cubs | 5â4 (11) | Zinn (6â4) | Martin | â | â | 67â38 |
| 106 | August 12 | Cubs | 12â9 | Cooper (19â7) | Cheeves | â | â | 68â38 |
| 107 | August 13 | Cubs | 4â3 | Glazner (10â4) | Freeman | â | â | 69â38 |
| 108 | August 14 | @ Cubs | 1â0 | Morrison (4â3) | Martin | â | â | 70â38 |
| 109 | August 16 | @ Phillies | 5â6 | Betts | Cooper (19â8) | â | â | 70â39 |
| 110 | August 16 | @ Phillies | 8â6 (11) | Zinn (7â4) | Smith | â | â | 71â39 |
| 111 | August 18 | @ Phillies | 4â3 | Hamilton (11â10) | Ring | Carlson (2) | â | 72â39 |
| 112 | August 18 | @ Phillies | 3â2 | Glazner (11â4) | Winters | â | â | 73â39 |
| 113 | August 19 | @ Phillies | 14â3 | Morrison (5â3) | Meadows | â | â | 74â39 |
| 114 | August 19 | @ Phillies | 1â4 | Hubbell | Zinn (7â5) | â | â | 74â40 |
| 115 | August 20 | @ Braves | 6â4 (13) | Cooper (20â8) | Fillingim | â | â | 75â40 |
| 116 | August 22 | @ Braves | 10â8 | Hamilton (12â10) | McQuillan | Carlson (3) | â | 76â40 |
| 117 | August 23 | @ Braves | 3â4 | Watson | Glazner (11â5) | â | â | 76â41 |
| 118 | August 24 | @ Giants | 2â10 | Nehf | Adams (12â4) | â | â | 76â42 |
| 119 | August 24 | @ Giants | 0â7 | Douglas | Cooper (20â9) | â | â | 76â43 |
| 120 | August 25 | @ Giants | 2â5 | Toney | Morrison (5â4) | â | 12,000 | 76â44 |
| 121 | August 26 | @ Giants | 1â2 | Douglas | Hamilton (12â11) | â | 15,000 | 76â45 |
| 122 | August 27 | @ Giants | 1â3 | Nehf | Carlson (2â5) | â | 36,000 | 76â46 |
| 123 | August 28 | @ Robins | 2â0 | Morrison (6â4) | Grimes | â | 20,000 | 77â46 |
| 124 | August 29 | @ Robins | 0â1 | Ruether | Cooper (20â10) | â | 4,500 | 77â47 |
| 125 | August 30 | @ Robins | 8â2 | Glazner (12â5) | Cadore | â | â | 78â47 |
|
September: 11â16 (Home: 10â12; Away: 1â4)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 126 | September 1 | Cardinals | 4â10 | Pertica | Hamilton (12â12) | â | â | 78â48 |
| 127 | September 1 | Cardinals | 0â8 | Sherdel | Morrison (6â5) | â | â | 78â49 |
| 128 | September 2 | Cardinals | 0â1 | Haines | Carlson (2â6) | â | â | 78â50 |
| 129 | September 4 | @ Reds | 2â1 (12) | Glazner (13â5) | Luque | â | â | 79â50 |
| 130 | September 5 | Reds | 1â2 (13) | Rixey | Hamilton (12â13) | â | â | 79â51 |
| 131 | September 5 | Reds | 2â1 | Cooper (21â10) | Markle | â | â | 80â51 |
| 132 | September 9 | Cubs | 5â8 | Freeman | Cooper (21â11) | Alexander | â | 80â52 |
| 133 | September 10 | Cubs | 8â0 | Morrison (7â5) | Alexander | â | 10,000 | 81â52 |
| 134 | September 11 | @ Reds | 1â4 | Marquard | Hamilton (12â14) | â | 3,000 | 81â53 |
| 135 | September 12 | Braves | 5â4 (15) | Adams (13â4) | Scott | â | 8,000 | 82â53 |
| 136 | September 12 | Braves | 3â4 | Morgan | Zinn (7â6) | â | â | 82â54 |
| 137 | September 13 | Braves | 5â3 | Carlson (3â6) | McQuillan | â | 5,000 | 83â54 |
| 138 | September 14 | Braves | 5â2 | Morrison (8â5) | Fillingim | â | â | 84â54 |
| 139 | September 15 | Braves | 3â6 | Scott | Cooper (21â12) | â | 5,000 | 84â55 |
| 140 | September 16 | Giants | 0â5 | Toney | Hamilton (12â15) | â | 25,000 | 84â56 |
| 141 | September 17 | Giants | 1â6 | Nehf | Carlson (3â7) | â | 25,000 | 84â57 |
| 142 | September 19 | Giants | 2â1 | Adams (14â4) | Douglas | â | 10,000 | 85â57 |
| 143 | September 21 | Robins | 0â2 (7) | Mitchell | Morrison (8â6) | â | 3,000 | 85â58 |
| 144 | September 22 | Robins | 3â1 | Glazner (14â5) | Grimes | Carlson (4) | 8,000 | 86â58 |
| 145 | September 22 | Robins | 0â2 | Cadore | Cooper (21â13) | Smith | 12,000 | 86â59 |
| 146 | September 23 | Phillies | 2â0 | Hamilton (13â15) | Meadows | â | 2,500 | 87â59 |
| 147 | September 24 | Phillies | 4â3 | Morrison (9â6) | Ring | â | 6,000 | 88â59 |
| 148 | September 26 | Phillies | 1â2 | Hubbell | Adams (14â5) | â | 1,500 | 88â60 |
| 149 | September 27 | Phillies | 9â6 | Carlson (4â7) | Winters | â | 300 | 89â60 |
| 150 | September 29 | @ Cardinals | 4â5 (10) | North | Cooper (21â14) | â | 5,000 | 89â61 |
| 151 | September 29 | @ Cardinals | 1â3 (6) | Sherdel | Morrison (9â7) | â | â | 89â62 |
| 152 | September 30 | @ Cardinals | 4â12 | Haines | Carlson (4â8) | â | â | 89â63 |
|
October: 1â0 (Home: 0â0; Away: 1â0)
| # | Date | Opponent | Score | Win | Loss | Save | Attendance | Record |
| 153 | October 1 | @ Cardinals | 4â4 | | | â | â | 89â63 |
| 154 | October 2 | @ Cardinals | 4â3 | Cooper (22â14) | North | â | â | 90â63 |
|
Legend: = Win = Loss = Tie Bold = Pirates team member |