George Leclair has allowed the most earned runs in a start, with 20 earned runs against the Indianapolis Hoosiers on August 16, 1914.
Interpreted as:
most earned runs in a single regular-season start by a player| NAME | ER | GS | DATE | TM | OPP | DEC | ERA | SO | CG | SHO | SV | IP | H | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | G. Leclair | 20 | 1 | 8/16/1914 | PTF | @ | IND | L | 22.50 | 0 | 1 | 0 | 0 | 8.0 | 24 | 21 | 0 | 8 | 0 | 0 | 51 | 0 | |
| 2 |  | H. Ehmke | 16 | 1 | 9/28/1923 |  BSA | vs |  NYY | L | 24.00 | 6 | 0 | 0 | 0 | 6.0 | 21 | 17 | 2 | 4 | 0 | 0 | 42 | 0 | |
| 3 |  | J. Bracken | 16 | 1 | 9/15/1901 |  CLE | @ |  DET | L | 20.57 | 1 | 1 | 0 | 0 | 7.0 | 24 | 21 | 1 | 3 | 2 | 0 | 49 | 1 | |
| 4 | | B. Feller | 15 | 1 | 8/26/1938 |  CLE | @ | NYY | L | 19.29 | 7 | 0 | 0 | 0 | 7.0 | 15 | 15 | 2 | 9 | 0 | 0 | 44 | 1 | |
| 5 |  | S. Castleman | 15 | 1 | 6/9/1936 |  NYG | @ |  CIN | L | 16.88 | 2 | 1 | 0 | 0 | 8.0 | 18 | 15 | 1 | 3 | 0 | 0 | 45 | 1 | |
| 6 |  | F. Rhem | 15 | 1 | 8/4/1933 |  PHN | vs | NYG | L | 16.88 | 1 | 0 | 0 | 0 | 8.0 | 21 | 16 | 0 | 3 | 1 | 0 | 47 | 0 | |
| 7 |  | H. McQuillan | 15 | 1 | 9/11/1927 |  BSN | @ | CIN | L | 20.25 | 2 | 0 | 0 | 0 | 6.2 | 17 | 16 | 1 | 3 | 0 | 0 | 39 | 0 | |
| 8 |  | W. Noyes | 15 | 1 | 9/5/1919 |  PHA | vs | BSA | L | 19.29 | 3 | 0 | 0 | 0 | 7.0 | 22 | 15 | 1 | 2 | 1 | 0 | 43 | 0 | |
| 9 | | J. Katoll | 15 | 1 | 9/12/1902 |  BAL | vs |  WSH | L | 15.00 | 0 | 1 | 0 | 0 | 9.0 | 23 | 15 | 0 | 1 | 0 | 0 | 49 | 0 | |
| 10 |  | J. Hughes | 15 | 1 | 8/20/1902 |  BKN | @ | CIN | L | 16.88 | 3 | 1 | 0 | 0 | 8.0 | 21 | 15 | 1 | 3 | 0 | 0 | 45 | 0 | |
| 11 | | A. Maul | 15 | 1 | 9/5/1901 | NYG | vs |  PIT | L | 15.00 | 3 | 1 | 0 | 0 | 9.0 | 22 | 15 | 1 | 5 | 0 | 0 | 52 | 0 | |
| 12 |  | C. Patten | 15 | 1 | 7/24/1901 | WSH | @ |  CWS | L | 16.88 | 1 | 1 | 0 | 0 | 8.0 | 20 | 17 | 0 | 4 | 0 | 0 | 52 | 0 | |
| 13 |  | M. Oquist | 14 | 1 | 8/3/1998 |  OAK | vs | NYY | L | 25.20 | 3 | 0 | 0 | 0 | 5.0 | 16 | 14 | 4 | 3 | 0 | 0 | 0 | 32 | 0 |
| 14 |  | B. Travers | 14 | 1 | 8/14/1977 |  MIL | @ | CLE | L | 16.43 | 4 | 0 | 0 | 0 | 7.2 | 18 | 14 | 2 | 4 | 1 | 0 | 0 | 45 | 2 |
| 15 | | A. Jurisich | 14 | 1 | 6/28/1947 | PHN | @ | NYG | L | 15.75 | 1 | 1 | 0 | 0 | 8.0 | 16 | 14 | 3 | 6 | 0 | 0 | 46 | 0 | |
| 16 | | C. Dean | 14 | 1 | 9/28/1940 | PHA | @ |  BSA | L | 15.75 | 1 | 1 | 0 | 0 | 8.0 | 19 | 16 | 1 | 5 | 0 | 0 | 47 | 2 | |
| 17 |  | J. Walkup | 14 | 1 | 7/25/1937 |  SLA | vs |  WSH | L | 15.75 | 3 | 0 | 0 | 0 | 8.0 | 16 | 14 | 1 | 5 | 0 | 0 | 44 | 1 | |
| 18 | | H. Lisenbee | 14 | 1 | 9/11/1936 | PHA | @ |  CWS | L | 15.75 | 1 | 1 | 0 | 0 | 8.0 | 26 | 17 | 2 | 4 | 0 | 0 | 51 | 1 | |
| 19 | | J. Miljus | 14 | 1 | 7/25/1929 | CLE | @ | PHA | L | 42.00 | 0 | 0 | 0 | 0 | 3.0 | 13 | 14 | 3 | 3 | 0 | 0 | 25 | 0 | |
| 20 |  | T. Lyons | 14 | 1 | 7/21/1924 | CWS | @ | WSH | L | 15.75 | 3 | 1 | 0 | 0 | 8.0 | 18 | 16 | 0 | 5 | 0 | 0 | 48 | 0 | |
| 21 |  | B. Phillips | 14 | 1 | 9/24/1901 | CIN | vs | BKN | L | 14.00 | 3 | 1 | 0 | 0 | 9.0 | 21 | 16 | 2 | 0 | 1 | 0 | 51 | 0 | |
| 22 |  | R. Miller | 14 | 1 | 6/24/1901 | DET | @ | BAL | L | 15.75 | 0 | 1 | 0 | 0 | 8.0 | 22 | 17 | 0 | 3 | 2 | 0 | 50 | 0 | |
| 23 | | D. Parker | 14 | 1 | 6/21/1901 | CIN | @ | BKN | L | 15.75 | 0 | 1 | 0 | 0 | 8.0 | 26 | 21 | 1 | 2 | 0 | 0 | 51 | 1 | |
| 24 | | R. Patterson | 14 | 1 | 5/5/1901 | CWS | @ |  MIL | L | 14.00 | 2 | 1 | 0 | 0 | 9.0 | 25 | 21 | 1 | 2 | 0 | 0 | 57 | 0 | |
| 25 | | B. Lively | 13 | 1 | 8/1/2023 | CIN | @ |  CHC | L | 29.25 | 2 | 0 | 0 | 0 | 4.0 | 13 | 13 | 4 | 2 | 1 | 0 | 0 | 27 | 0 |
Results may be incomplete. StatMuse has complete game-level data for earned runs going back to the 1923 season.
Some of the information used here was obtained free of charge from Retrosheet.
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