1921 Pittsburgh Pirates season
The 1921 Pittsburgh Pirates season was the 40th season of the Pittsburgh Pirates franchise; the 35th in the National League. The Pirates finished second in the league standings with a record of 90–63. It would be the first that games would be aired on radio via the then new station KDKA-AM to listeners all over Pittsburgh, making that team the first in the MLB to employ radio broadcasters for game broadcasts on the then new medium.Regular season
Season standings
Record vs. opponents
Game log
Roster
Batting
Starters by position
Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in
| Pos | Player | G | AB | H | Avg. | HR | RBI |
| C | | 114 | 393 | 111 | .282 | 0 | 38 |
| 1B | | 151 | 562 | 154 | .274 | 7 | 71 |
| 2B | | 98 | 350 | 119 | .340 | 0 | 53 |
| SS | | 153 | 612 | 180 | .294 | 1 | 70 |
| 3B | | 124 | 449 | 116 | .258 | 3 | 62 |
| OF | | 147 | 632 | 204 | .323 | 3 | 42 |
| OF | | 140 | 521 | 161 | .309 | 7 | 56 |
| OF | | 108 | 403 | 114 | .283 | 7 | 63 |
Other batters
Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in
| Player | G | AB | H | Avg. | HR | RBI |
| 117 | 442 | 132 | .299 | 3 | 52 |
| 60 | 230 | 74 | .322 | 6 | 48 |
| 30 | 91 | 22 | .242 | 0 | 9 |
| 19 | 52 | 14 | .269 | 0 | 9 |
| 16 | 45 | 13 | .289 | 0 | 11 |
| 30 | 40 | 10 | .250 | 0 | 6 |
| 13 | 38 | 9 | .237 | 0 | 3 |
| 7 | 19 | 5 | .263 | 0 | 2 |
| 5 | 4 | 0 | .000 | 0 | 0 |
| 1 | 3 | 0 | .000 | 0 | 0 |
| 1 | 1 | 0 | .000 | 0 | 0 |
Pitching
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts
| Player | G | IP | W | L | ERA | SO |
| 38 | 327 | 22 | 14 | 3.25 | 134 |
| 36 | 234 | 14 | 5 | 2.77 | 88 |
| 35 | 225 | 13 | 15 | 3.36 | 59 |
| 25 | 160 | 14 | 5 | 2.64 | 55 |
| 21 | 144 | 9 | 7 | 2.88 | 52 |
Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts
| Player | G | IP | W | L | ERA | SO |
| 32 | 127.1 | 7 | 6 | 3.68 | 49 |
| 31 | 109.2 | 4 | 8 | 4.27 | 37 |
| 10 | 48.1 | 5 | 3 | 2.98 | 19 |
Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts
| Player | G | W | L | SV | ERA | SO |
| 8 | 2 | 0 | 0 | 2.19 | 3 |
| 5 | 0 | 0 | 0 | 1.13 | 1 |
| 1 | 0 | 0 | 0 | 9.00 | 0 |
| 1 | 0 | 0 | 0 | 4.50 | 2 |
| 1 | 0 | 0 | 0 | 0.00 | 0 |
| 1 | 0 | 0 | 0 | 0.00 | 1 |
Farm system
