9 pitchers are tied for allowing the most home runs by a starting pitcher in a start, with 6 HR. The first three are Matt Swarmer on June 11, 2022, Michael Blazek on July 27, 2017 and James Shields on August 7, 2010.
| NAME | HR | GS | DATE | TM | OPP | DEC | ERA | SO | CG | SHO | SV | IP | H | ER | R | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | M. Swarmer | 6 | 1 | 6/11/2022 |  CHC | @ |  NYY | L | 10.80 | 4 | 0 | 0 | 0 | 5.0 | 7 | 6 | 6 | 0 | 0 | 0 | 0 | 22 | 0 |
| 2 |  | M. Blazek | 6 | 1 | 7/27/2017 |  MIL | @ |  WSH | L | 30.86 | 4 | 0 | 0 | 0 | 2.1 | 7 | 8 | 8 | 1 | 0 | 0 | 0 | 15 | 0 |
| 3 |  | J. Shields | 6 | 1 | 8/7/2010 |  TBR | @ |  TOR | L | 18.00 | 2 | 0 | 0 | 0 | 4.0 | 9 | 8 | 8 | 4 | 0 | 0 | 0 | 25 | 1 |
| 4 |  | R.A. Dickey | 6 | 1 | 4/6/2006 |  TEX | vs |  DET | L | 18.90 | 1 | 0 | 0 | 0 | 3.1 | 8 | 7 | 7 | 1 | 0 | 0 | 0 | 18 | 0 |
| 5 |  | T. Wakefield | 6 | 1 | 8/8/2004 |  BOS | @ | DET | W | 12.60 | 2 | 0 | 0 | 0 | 5.0 | 8 | 7 | 7 | 0 | 0 | 0 | 0 | 23 | 0 |
| 6 |  | B. Kerksieck | 6 | 1 | 8/13/1939 |  PHN | @ |  NYG | L | 15.75 | 1 | 0 | 0 | 0 | 4.0 | 7 | 7 | 7 | 4 | 0 | 0 | 22 | 0 | |
| 7 |  | T. Thomas | 6 | 1 | 6/27/1936 |  SLA | vs | NYY | L | 10.00 | 2 | 1 | 0 | 0 | 9.0 | 16 | 10 | 10 | 6 | 0 | 0 | 48 | 1 | |
| 8 |  | S. Thurston | 6 | 1 | 8/13/1932 |  BKN | @ | NYG | W | 8.00 | 0 | 1 | 0 | 0 | 9.0 | 12 | 8 | 9 | 0 | 0 | 0 | 41 | 0 | |
| 9 |  | L. Benton | 6 | 1 | 5/12/1930 | NYG | @ |  CHC | W | 10.80 | 6 | 0 | 0 | 0 | 6.2 | 9 | 8 | 9 | 5 | 0 | 0 | 35 | 0 | |
| 10 |  | K. Gibson | 5 | 1 | 4/29/2025 |  BAL | vs | NYY | L | 22.09 | 2 | 0 | 0 | 0 | 3.2 | 11 | 9 | 9 | 2 | 0 | 0 | 0 | 24 | 0 |
| 11 |  | B. Francis | 5 | 1 | 4/29/2025 |  TOR | vs | BOS | L | 21.00 | 1 | 0 | 0 | 0 | 3.0 | 8 | 7 | 7 | 0 | 0 | 0 | 0 | 17 | 0 |
| 12 |  | N. Cortes | 5 | 1 | 3/29/2025 |  MIL | @ | NYY | L | 36.00 | 2 | 0 | 0 | 0 | 2.0 | 6 | 8 | 8 | 5 | 0 | 0 | 0 | 17 | 0 |
| 13 |  | C. Spiers | 5 | 1 | 8/20/2024 |  CIN | @ | TOR | L | 18.69 | 3 | 0 | 0 | 0 | 4.1 | 13 | 9 | 10 | 2 | 1 | 0 | 0 | 28 | 0 |
| 14 | | K. Crawford | 5 | 1 | 7/21/2024 | BOS | @ |  LAD | L | 10.80 | 2 | 0 | 0 | 0 | 5.0 | 7 | 6 | 6 | 0 | 0 | 0 | 0 | 22 | 0 |
| 15 |  | M. Pérez | 5 | 1 | 5/15/2024 |  PIT | @ | MIL | L | 16.20 | 4 | 0 | 0 | 0 | 5.0 | 11 | 9 | 9 | 1 | 0 | 0 | 0 | 26 | 0 |
| 16 | | H. Greene | 5 | 1 | 8/20/2023 | CIN | vs | TOR | L | 24.00 | 4 | 0 | 0 | 0 | 3.0 | 10 | 8 | 9 | 3 | 0 | 0 | 0 | 24 | 1 |
| 17 |  | T. Gonsolin | 5 | 1 | 8/18/2023 | LAD | vs |  MIA | L | 27.00 | 2 | 0 | 0 | 0 | 3.1 | 8 | 10 | 10 | 4 | 0 | 0 | 0 | 22 | 0 |
| 18 |  | J. Ryan | 5 | 1 | 6/27/2023 |  MIN | @ |  ATL | L | 18.00 | 5 | 0 | 0 | 0 | 3.0 | 9 | 6 | 6 | 0 | 0 | 0 | 0 | 18 | 0 |
| 19 | | J. Fleming | 5 | 1 | 5/28/2023 | TBR | vs | LAD | 12.00 | 3 | 0 | 0 | 0 | 6.0 | 12 | 8 | 10 | 2 | 0 | 0 | 1 | 32 | 0 | |
| 20 |  | J. Suarez | 5 | 1 | 4/24/2023 |  LAA | vs |  OAK | 12.60 | 5 | 0 | 0 | 0 | 5.0 | 8 | 7 | 7 | 2 | 0 | 0 | 0 | 23 | 0 | |
| 21 |  | M. Kopech | 5 | 1 | 4/3/2023 |  CWS | vs |  SFG | L | 13.50 | 5 | 0 | 0 | 0 | 4.2 | 8 | 7 | 7 | 3 | 0 | 0 | 0 | 25 | 0 |
| 22 |  | T. Romero | 5 | 1 | 10/1/2022 | WSH | vs | PHI | L | 14.73 | 2 | 0 | 0 | 0 | 3.2 | 8 | 6 | 8 | 4 | 0 | 0 | 0 | 23 | 0 |
| 23 |  | H. Gaddis | 5 | 1 | 9/15/2022 |  CLE | vs | CWS | L | 15.75 | 3 | 0 | 0 | 0 | 4.0 | 8 | 7 | 7 | 1 | 0 | 0 | 0 | 21 | 0 |
| 24 | | J. Ryan | 5 | 1 | 7/29/2022 | MIN | @ |  SDP | L | 19.29 | 7 | 0 | 0 | 0 | 4.2 | 8 | 10 | 10 | 2 | 0 | 0 | 0 | 24 | 0 |
| 25 |  | G. Cole | 5 | 1 | 6/9/2022 | NYY | @ | MIN | 27.00 | 3 | 0 | 0 | 0 | 2.1 | 8 | 7 | 7 | 2 | 0 | 0 | 0 | 17 | 0 | |
Results may be incomplete. StatMuse has complete game-level data for home runs allowed and starts going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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