Jon Lester had a record of 4-1 with an ERA of 1.77 and 34 strikeouts in 6 appearances in the World Series in his career.
| NAME | DATE | SEASON | SERIES | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Lester | 10/28/2007 | 2007 | World Series |  BOS | @ |  COL | W | 1 | 0.00 | 3 | 0 | 0 | 0 | 5.2 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 23 | 0 |
| 2 | | J. Lester | 10/23/2013 | 2013 | World Series | BOS | vs |  STL | W | 1 | 0.00 | 8 | 0 | 0 | 0 | 7.2 | 5 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 28 | 0 |
| 3 | | J. Lester | 10/28/2013 | 2013 | World Series | BOS | @ | STL | W | 1 | 1.17 | 7 | 0 | 0 | 0 | 7.2 | 4 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 26 | 0 |
| 4 |  | J. Lester | 10/25/2016 | 2016 | World Series |  CHC | @ |  CLE | L | 1 | 4.76 | 7 | 0 | 0 | 0 | 5.2 | 6 | 3 | 3 | 1 | 3 | 1 | 0 | 0 | 26 | 0 |
| 5 | | J. Lester | 10/30/2016 | 2016 | World Series | CHC | vs | CLE | W | 1 | 3.00 | 5 | 0 | 0 | 0 | 6.0 | 4 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 21 | 0 |
| 6 | | J. Lester | 11/2/2016 | 2016 | World Series | CHC | @ | CLE | 0 | 3.00 | 4 | 0 | 0 | 0 | 3.0 | 3 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 13 | 1 | |
| Total | 5 | 1.77 | 34 | 0 | 0 | 0 | 35.2 | 25 | 7 | 8 | 3 | 8 | 1 | 0 | 0 | 137 | 1 |
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