Ryan Weber and Alec Bettinger were tied for allowing the most earned runs in a game in 2021, with 11 earned runs.
Interpreted as:
2021 season most earned runs allowed by a player in single regular-season game| NAME | ER | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | R. Weber | 11 | 6/13/2021 |  BOS | vs |  TOR | 0 | 17.47 | 7 | 0 | 0 | 0 | 5.2 | 13 | 11 | 4 | 2 | 0 | 0 | 0 | 30 | 0 | |
| 2 | | A. Bettinger | 11 | 5/2/2021 |  MIL | vs |  LAD | L | 1 | 24.75 | 0 | 0 | 0 | 0 | 4.0 | 11 | 11 | 2 | 2 | 1 | 0 | 0 | 26 | 1 |
| 3 | | J. Fleming | 10 | 8/11/2021 |  TBR | @ | BOS | L | 1 | 27.00 | 3 | 0 | 0 | 0 | 3.1 | 11 | 10 | 0 | 6 | 0 | 0 | 2 | 26 | 0 |
| 4 |  | S. Alcantara | 10 | 8/6/2021 |  MIA | @ |  COL | L | 1 | 24.55 | 1 | 0 | 0 | 0 | 3.2 | 10 | 10 | 3 | 2 | 1 | 0 | 0 | 24 | 0 |
| 5 | | J. Eickhoff | 10 | 7/27/2021 |  NYM | vs |  ATL | L | 1 | 27.00 | 4 | 0 | 0 | 0 | 3.1 | 7 | 10 | 3 | 5 | 1 | 0 | 1 | 23 | 0 |
| 6 | | M. Foltynewicz | 10 | 7/18/2021 |  TEX | @ | TOR | L | 1 | 54.00 | 0 | 0 | 0 | 0 | 1.2 | 8 | 10 | 4 | 2 | 0 | 0 | 0 | 15 | 0 |
| 7 | | C. Martinez | 10 | 6/2/2021 |  STL | @ | LAD | L | 1 | 135.00 | 1 | 0 | 0 | 0 | 0.2 | 6 | 10 | 0 | 4 | 0 | 0 | 0 | 12 | 0 |
| 8 | | A. DeSclafani | 10 | 5/23/2021 |  SFG | vs | LAD | L | 1 | 33.75 | 3 | 0 | 0 | 0 | 2.2 | 9 | 10 | 1 | 3 | 0 | 0 | 1 | 19 | 0 |
| 9 | | J. Ross | 10 | 4/19/2021 |  WSH | vs | STL | L | 1 | 20.77 | 5 | 0 | 0 | 0 | 4.1 | 8 | 10 | 4 | 3 | 1 | 0 | 1 | 24 | 0 |
| 10 |  | T. Anderson | 9 | 9/25/2021 |  SEA | @ |  LAA | L | 1 | 40.50 | 0 | 0 | 0 | 0 | 2.0 | 9 | 9 | 1 | 1 | 0 | 0 | 0 | 15 | 0 |
| 11 | | A. Albers | 9 | 9/4/2021 |  MIN | @ | TBR | L | 1 | 27.00 | 2 | 0 | 0 | 0 | 3.0 | 10 | 9 | 4 | 1 | 0 | 0 | 1 | 20 | 0 |
| 12 | | G. Jax | 9 | 8/24/2021 | MIN | @ | BOS | L | 1 | 17.36 | 4 | 0 | 0 | 0 | 4.2 | 7 | 9 | 3 | 4 | 0 | 0 | 0 | 25 | 1 |
| 13 |  | L. Gilbert | 9 | 8/21/2021 | SEA | @ |  HOU | L | 1 | 17.36 | 5 | 0 | 0 | 0 | 4.2 | 8 | 9 | 2 | 1 | 0 | 0 | 0 | 23 | 1 |
| 14 | | K. Hendricks | 9 | 8/12/2021 |  CHC | vs | MIL | L | 1 | 20.25 | 3 | 0 | 0 | 0 | 4.0 | 11 | 9 | 2 | 1 | 1 | 0 | 0 | 25 | 0 |
| 15 |  | J.A. Happ | 9 | 7/28/2021 | MIN | vs |  DET | L | 1 | 27.00 | 2 | 0 | 0 | 0 | 3.0 | 10 | 9 | 0 | 4 | 0 | 0 | 0 | 23 | 0 |
| 16 | | C. Smith | 9 | 7/10/2021 |  ARI | @ | LAD | L | 1 | 81.00 | 1 | 0 | 0 | 0 | 1.0 | 6 | 9 | 3 | 3 | 0 | 0 | 0 | 12 | 0 |
| 17 | | M. Manning | 9 | 6/28/2021 | DET | @ |  CLE | L | 1 | 22.09 | 2 | 0 | 0 | 0 | 3.2 | 9 | 9 | 2 | 0 | 1 | 0 | 0 | 21 | 0 |
| 18 | | M. Minor | 9 | 6/25/2021 |  KCR | @ | TEX | L | 1 | 16.20 | 2 | 0 | 0 | 0 | 5.0 | 11 | 9 | 0 | 2 | 0 | 0 | 0 | 27 | 0 |
| 19 |  | T. Anderson | 9 | 5/21/2021 |  PIT | @ | ATL | L | 1 | 16.20 | 7 | 0 | 0 | 0 | 5.0 | 10 | 9 | 3 | 2 | 0 | 0 | 0 | 27 | 0 |
| 20 | | J.A. Happ | 9 | 5/12/2021 | MIN | @ |  CWS | L | 1 | 24.30 | 3 | 0 | 0 | 0 | 3.1 | 9 | 9 | 1 | 2 | 0 | 0 | 0 | 20 | 1 |
| 21 | | A. Gomber | 9 | 4/26/2021 | COL | @ | SFG | L | 1 | 48.60 | 3 | 0 | 0 | 0 | 1.2 | 7 | 9 | 0 | 4 | 0 | 0 | 2 | 16 | 0 |
| 22 |  | P. Corbin | 9 | 4/15/2021 | WSH | vs | ARI | L | 1 | 40.50 | 1 | 0 | 0 | 0 | 2.0 | 6 | 10 | 3 | 4 | 2 | 0 | 0 | 19 | 0 |
| 23 |  | Y. Darvish | 8 | 9/13/2021 |  SDP | @ | SFG | L | 1 | 18.00 | 3 | 0 | 0 | 0 | 4.0 | 6 | 8 | 4 | 3 | 0 | 0 | 0 | 21 | 0 |
| 24 | | G. Otto | 8 | 9/10/2021 | TEX | @ |  OAK | L | 1 | 21.60 | 5 | 0 | 0 | 0 | 3.1 | 8 | 8 | 0 | 1 | 2 | 0 | 0 | 20 | 0 |
| 25 | | K. Gibson | 8 | 9/3/2021 |  PHI | @ | MIA | L | 1 | 13.50 | 4 | 0 | 0 | 0 | 5.1 | 8 | 8 | 1 | 2 | 0 | 0 | 1 | 24 | 0 |
Some of the information used here was obtained free of charge from Retrosheet.
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