Jon Lester had a 4-0 record with an ERA of 3.40 and 34 strikeouts in 10 appearances in his last 10 games.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Lester | 8/14/2021 |  STL | @ |  KCR | W | 1 | 1.59 | 2 | 0 | 0 | 0 | 5.2 | 7 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 24 | 0 |
| 2 | | J. Lester | 8/19/2021 | STL | vs |  MIL | 1 | 8.31 | 0 | 0 | 0 | 0 | 4.1 | 6 | 4 | 4 | 0 | 3 | 1 | 0 | 0 | 23 | 0 | |
| 3 | | J. Lester | 8/25/2021 | STL | vs |  DET | 1 | 1.80 | 4 | 0 | 0 | 0 | 5.0 | 7 | 1 | 1 | 0 | 2 | 0 | 0 | 1 | 21 | 0 | |
| 4 | | J. Lester | 8/30/2021 | STL | @ |  CIN | W | 1 | 1.42 | 5 | 0 | 0 | 0 | 6.1 | 1 | 1 | 1 | 1 | 2 | 0 | 0 | 0 | 22 | 0 |
| 5 | | J. Lester | 9/5/2021 | STL | @ | MIL | 1 | 1.69 | 2 | 0 | 0 | 0 | 5.1 | 6 | 1 | 1 | 1 | 2 | 0 | 0 | 1 | 23 | 0 | |
| 6 | | J. Lester | 9/10/2021 | STL | vs | CIN | 1 | 2.57 | 2 | 0 | 0 | 0 | 7.0 | 3 | 2 | 2 | 2 | 4 | 0 | 0 | 0 | 27 | 0 | |
| 7 | | J. Lester | 9/15/2021 | STL | @ |  NYM | W | 1 | 3.00 | 7 | 0 | 0 | 0 | 6.0 | 6 | 2 | 3 | 2 | 0 | 0 | 0 | 0 | 25 | 0 |
| 8 | | J. Lester | 9/20/2021 | STL | @ | MIL | W | 1 | 3.00 | 2 | 0 | 0 | 0 | 6.0 | 3 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 21 | 0 |
| 9 | | J. Lester | 9/25/2021 | STL | @ |  CHC | 1 | 5.40 | 6 | 0 | 0 | 0 | 5.0 | 8 | 3 | 4 | 0 | 3 | 0 | 0 | 0 | 26 | 0 | |
| 10 | | J. Lester | 10/2/2021 | STL | vs | CHC | 1 | 7.20 | 4 | 0 | 0 | 0 | 5.0 | 6 | 4 | 4 | 1 | 4 | 0 | 0 | 0 | 24 | 0 | |
| Total | 10 | 3.40 | 34 | 0 | 0 | 0 | 55.2 | 53 | 21 | 23 | 9 | 22 | 1 | 0 | 2 | 236 | 0 |
Some of the information used here was obtained free of charge from Retrosheet.
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