17 pitchers are tied for allowing the most earned runs in a postseason game, with 8 earned runs. The first three are George Kirby, Jack Flaherty and Grant Dayton.
| NAME | ER | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | G. Kirby | 8 | 10/15/2025 |  SEA | vs |  TOR | L | 1 | 18.00 | 4 | 0 | 0 | 0 | 4.0 | 8 | 8 | 3 | 2 | 0 | 0 | 0 | 22 | 1 |
| 2 |  | J. Flaherty | 8 | 10/18/2024 |  LAD | @ |  NYM | L | 1 | 24.00 | 0 | 0 | 0 | 0 | 3.0 | 8 | 8 | 1 | 4 | 0 | 0 | 0 | 21 | 0 |
| 3 | | G. Dayton | 8 | 10/14/2020 |  ATL | vs | LAD | 0 | 36.00 | 2 | 0 | 0 | 0 | 2.0 | 8 | 8 | 3 | 1 | 1 | 0 | 0 | 16 | 0 | |
| 4 |  | J. Cueto | 8 | 10/19/2015 |  KCR | @ | TOR | L | 1 | 36.00 | 2 | 0 | 0 | 0 | 2.0 | 6 | 8 | 1 | 4 | 1 | 0 | 0 | 17 | 0 |
| 5 |  | C. Kershaw | 8 | 10/3/2014 | LAD | vs |  STL | L | 1 | 10.80 | 10 | 0 | 0 | 0 | 6.2 | 8 | 8 | 2 | 0 | 0 | 0 | 0 | 28 | 0 |
| 6 | | J. Beckett | 8 | 10/11/2008 |  BOS | @ |  TBR | 1 | 16.62 | 5 | 0 | 0 | 0 | 4.1 | 9 | 8 | 3 | 1 | 0 | 0 | 0 | 22 | 0 | |
| 7 |  | CC Sabathia | 8 | 10/12/2007 |  CLE | @ | BOS | L | 1 | 16.62 | 3 | 0 | 0 | 0 | 4.1 | 7 | 8 | 0 | 5 | 1 | 0 | 1 | 24 | 0 |
| 8 | | C. Wang | 8 | 10/4/2007 |  NYY | @ | CLE | L | 1 | 15.43 | 2 | 0 | 0 | 0 | 4.2 | 9 | 8 | 2 | 4 | 1 | 0 | 0 | 25 | 0 |
| 9 | | M. Clement | 8 | 10/4/2005 | BOS | @ |  CWS | L | 1 | 21.60 | 0 | 0 | 0 | 0 | 3.1 | 7 | 8 | 3 | 0 | 2 | 0 | 0 | 18 | 0 |
| 10 | | J. Peavy | 8 | 10/4/2005 |  SDP | @ | STL | L | 1 | 16.62 | 3 | 0 | 0 | 0 | 4.1 | 8 | 8 | 2 | 3 | 0 | 0 | 2 | 23 | 1 |
| 11 | | D. Wells | 8 | 10/5/2002 | NYY | @ |  ANA | L | 1 | 15.43 | 0 | 0 | 0 | 0 | 4.2 | 10 | 8 | 1 | 0 | 0 | 0 | 0 | 24 | 0 |
| 12 | | J. Witasick | 8 | 11/3/2001 | NYY | @ |  ARI | 0 | 54.00 | 4 | 0 | 0 | 0 | 1.1 | 10 | 9 | 0 | 0 | 0 | 0 | 0 | 14 | 1 | |
| 13 | | P. Abbott | 8 | 10/13/2001 | SEA | @ | CLE | 0 | 24.00 | 3 | 0 | 0 | 0 | 3.0 | 9 | 8 | 3 | 5 | 0 | 0 | 0 | 22 | 0 | |
| 14 | | S. Reed | 8 | 10/10/1999 | CLE | @ | BOS | 0 | 54.00 | 1 | 0 | 0 | 0 | 1.1 | 7 | 8 | 1 | 1 | 2 | 0 | 0 | 14 | 0 | |
| 15 |  | G. Maddux | 8 | 10/4/1989 |  CHC | vs |  SFG | L | 1 | 18.00 | 3 | 0 | 0 | 0 | 4.0 | 8 | 8 | 2 | 1 | 1 | 0 | 1 | 22 | 0 |
| 16 | | G. Bush | 8 | 9/28/1932 |  CHC | @ | NYY | L | 1 | 13.50 | 2 | 0 | 0 | 0 | 5.1 | 3 | 8 | 1 | 5 | 0 | 0 | 0 | 26 | 0 |
| 17 | | G. Alexander | 8 | 10/5/1928 | SLN | @ | NYY | L | 1 | 30.86 | 1 | 0 | 0 | 0 | 2.1 | 6 | 8 | 1 | 4 | 0 | 0 | 0 | 17 | 0 |
| 18 |  | M. Fried | 7 | 10/5/2025 | NYY | @ | TOR | L | 1 | 21.00 | 1 | 0 | 0 | 0 | 3.0 | 8 | 7 | 1 | 2 | 0 | 0 | 0 | 18 | 0 |
| 19 | | L. McCullers Jr. | 7 | 11/1/2022 |  HOU | @ |  PHI | L | 1 | 14.54 | 5 | 0 | 0 | 0 | 4.1 | 6 | 7 | 5 | 1 | 0 | 0 | 0 | 20 | 0 |
| 20 |  | M. Scherzer | 7 | 10/7/2022 | NYM | vs |  SDP | L | 1 | 13.50 | 4 | 0 | 0 | 0 | 4.2 | 7 | 7 | 4 | 0 | 0 | 0 | 0 | 21 | 0 |
| 21 | | K. Wright | 7 | 10/14/2020 | ATL | vs | LAD | L | 1 | 94.50 | 0 | 0 | 0 | 0 | 0.2 | 5 | 7 | 2 | 2 | 0 | 0 | 0 | 9 | 0 |
| 22 |  | S. Bieber | 7 | 9/29/2020 | CLE | vs | NYY | L | 1 | 13.50 | 7 | 0 | 0 | 0 | 4.2 | 9 | 7 | 2 | 2 | 0 | 0 | 0 | 25 | 0 |
| 23 |  | C. Morton | 7 | 10/16/2017 | HOU | @ | NYY | L | 1 | 17.18 | 3 | 0 | 0 | 0 | 3.2 | 6 | 7 | 1 | 2 | 1 | 0 | 0 | 19 | 0 |
| 24 |  | C. Sale | 7 | 10/5/2017 | BOS | @ | HOU | L | 1 | 12.60 | 6 | 0 | 0 | 0 | 5.0 | 9 | 7 | 3 | 1 | 0 | 0 | 0 | 24 | 0 |
| 25 | | C. Kershaw | 7 | 10/18/2013 | LAD | @ | STL | L | 1 | 15.75 | 5 | 0 | 0 | 0 | 4.0 | 10 | 7 | 0 | 2 | 0 | 0 | 1 | 24 | 2 |
Results may be incomplete. StatMuse has complete game-level data for earned runs going back to the 1903 playoffs.
Some of the information used here was obtained free of charge from Retrosheet.
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