BostonRed Sox
- 3rd in AL East
Boston Red Sox Schedule 2021
| League Wild-Card Game | ||||||
| DATE | OPPONENT | RESULT | WIN | LOSS | SAVE | ATT |
| Wed, 6 Oct | W6-2 | Eovaldi 1-0 | Cole 0-1 | 38,324 | ||
| League Divisional Series | ||||||
| DATE | OPPONENT | RESULT | WIN | LOSS | SAVE | ATT |
| Fri, 8 Oct | L5-0 | McClanahan 1-0 | Rodriguez 0-1 | 27,419 | ||
| Sat, 9 Oct | W14-6 | Houck 1-0 | McHugh 0-1 | 37,616 | ||
| Sun, 10 Oct | W6-4 F/13 | Pivetta 1-0 | Patino 0-1 | 37,224 | ||
| Tue, 12 Oct | W6-5 | Whitlock 1-0 | Feyereisen 0-1 | 38,447 | ||
| League Championship Series | ||||||
| DATE | OPPONENT | RESULT | WIN | LOSS | SAVE | ATT |
| Sat, 16 Oct | L5-4 | Stanek 1-0 | Robles 0-1 | Pressly 1 | 40,534 | |
| Sat, 16 Oct | W9-5 | Eovaldi 1-0 | Garcia 0-1 | 41,476 | ||
| Tue, 19 Oct | W12-3 | Rodriguez 1-0 | Urquidy 0-1 | 37,603 | ||
| Wed, 20 Oct | L9-2 | Graveman 1-0 | Eovaldi 1-1 | 38,010 | ||
| Wed, 20 Oct | L9-1 | Valdez 1-0 | Sale 0-1 | 37,599 | ||
| Sat, 23 Oct | L5-0 | Garcia 1-1 | Eovaldi 1-2 | 42,718 | ||