| Oakland Athletics - 2021 | |||||||||
Record: 86-76 Park: O.co Coliseum Attendance: 701,430 Park Factor: 95 |
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| Batting | Pitching | Fielding | Lineups | Value | |||||||
| Player | G | BFP | OUTS | ER | ERA | ERpm | eWL |
| Chris Bassitt | 27 | 637 | 472 | 55 | 3.15 | 17.2 | 11-6 |
| Frankie Montas | 32 | 778 | 561 | 70 | 3.37 | 15.5 | 13-8 |
| Andrew Chafin | 28 | 116 | 88 | 5 | 1.53 | 8.8 | 3-0 |
| Lou Trivino | 71 | 310 | 221 | 26 | 3.18 | 7.8 | 5-3 |
| Sean Manaea | 32 | 754 | 538 | 78 | 3.91 | 3.3 | 10-10 |
| Cam Bedrosian | 9 | 38 | 27 | 2 | 2.00 | 2.2 | 1-0 |
| Jake Diekman | 67 | 262 | 182 | 26 | 3.86 | 1.5 | 4-3 |
| Yusmeiro Petit | 78 | 313 | 234 | 34 | 3.92 | 1.4 | 5-4 |
| Domingo Acevedo | 10 | 44 | 33 | 4 | 3.27 | 1.0 | 1-0 |
| Daulton Jefferies | 5 | 58 | 45 | 6 | 3.60 | 0.8 | 1-1 |
| Sam Moll | 8 | 44 | 31 | 4 | 3.48 | 0.7 | 1-0 |
| Mitch Moreland | 1 | 4 | 3 | 0 | 0.00 | 0.5 | 0-0 |
| Ka'ai Tom | 1 | 4 | 3 | 0 | 0.00 | 0.5 | 0-0 |
| Michael Feliz | 1 | 3 | 1 | 0 | 0.00 | 0.2 | 0-0 |
| James Kaprielian | 24 | 502 | 358 | 54 | 4.07 | 0.0 | 7-6 |
| Deolis Guerra | 53 | 269 | 197 | 30 | 4.11 | -0.3 | 3-4 |
| J. B. Wendelken | 26 | 117 | 75 | 12 | 4.32 | -0.7 | 1-2 |
| Jordan Weems | 5 | 18 | 13 | 3 | 6.23 | -1.1 | 0-0 |
| A. J. Puk | 12 | 65 | 40 | 9 | 6.08 | -3.2 | 0-1 |
| Cole Irvin | 32 | 768 | 535 | 84 | 4.24 | -3.6 | 10-10 |
| Reymin Guduan | 11 | 65 | 43 | 10 | 6.28 | -3.7 | 1-1 |
| Mike Fiers | 2 | 45 | 28 | 8 | 7.71 | -4.0 | 0-1 |
| Adam Kolarek | 12 | 51 | 27 | 8 | 8.00 | -4.2 | 0-1 |
| Sergio Romo | 66 | 259 | 185 | 32 | 4.67 | -4.4 | 3-4 |
| Burch Smith | 31 | 188 | 130 | 26 | 5.40 | -6.8 | 2-3 |
| Paul Blackburn | 9 | 175 | 115 | 25 | 5.87 | -8.2 | 1-3 |
| Jesus Luzardo | 13 | 173 | 114 | 29 | 6.87 | -12.6 | 1-3 |