Jason Jennings has allowed the most earned runs in a start with fewer than 1.0 inning pitched, with 11 earned runs versus the Padres on July 29, 2007.
Interpreted as:
most earned runs given up in a single regular-season start by a player under 1 innings pitched| NAME | ER | GS | IP | DATE | TM | OPP | DEC | ERA | SO | CG | SHO | SV | H | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Jennings | 11 | 1 | 0.2 | 7/29/2007 |  HOU | vs |  SDP | L | 148.50 | 0 | 0 | 0 | 0 | 8 | 11 | 2 | 3 | 0 | 0 | 0 | 13 | 0 |
| 2 | | C. Martinez | 10 | 1 | 0.2 | 6/2/2021 |  STL | @ |  LAD | L | 135.00 | 1 | 0 | 0 | 0 | 6 | 10 | 0 | 4 | 0 | 0 | 0 | 12 | 0 |
| 3 | | J. Guthrie | 10 | 1 | 0.2 | 4/8/2017 |  WSH | @ |  PHI | L | 135.00 | 0 | 0 | 0 | 0 | 6 | 10 | 0 | 4 | 0 | 0 | 0 | 12 | 0 |
| 4 | | L. Hudson | 10 | 1 | 0.1 | 8/13/2006 |  KCR | @ |  CLE | L | 270.00 | 1 | 0 | 0 | 0 | 8 | 11 | 1 | 3 | 0 | 0 | 0 | 13 | 0 |
| 5 |  | H. Brown | 9 | 1 | 0.2 | 4/11/2024 |  HOU | @ | KCR | L | 121.50 | 0 | 0 | 0 | 0 | 11 | 9 | 1 | 1 | 0 | 0 | 0 | 14 | 0 |
| 6 |  | C. Morton | 9 | 1 | 0.2 | 6/21/2015 |  PIT | @ | WSH | L | 121.50 | 1 | 0 | 0 | 0 | 8 | 9 | 2 | 1 | 0 | 0 | 0 | 11 | 0 |
| 7 | | R. Porcello | 9 | 1 | 0.2 | 4/20/2013 |  DET | @ |  LAA | L | 121.50 | 0 | 0 | 0 | 0 | 9 | 9 | 1 | 1 | 0 | 0 | 0 | 11 | 1 |
| 8 |  | J. Cueto | 9 | 1 | 0.2 | 7/6/2009 |  CIN | @ | PHI | L | 121.50 | 1 | 0 | 0 | 0 | 5 | 9 | 2 | 3 | 1 | 0 | 0 | 11 | 0 |
| 9 | | M. Redman | 9 | 1 | 0.1 | 9/23/2006 | KCR | vs | DET | L | 243.00 | 0 | 0 | 0 | 0 | 7 | 9 | 1 | 2 | 0 | 0 | 0 | 10 | 0 |
| 10 | | J. Cruz | 9 | 1 | 0.2 | 5/17/2006 |  ARI | vs | SDP | L | 121.50 | 1 | 0 | 0 | 0 | 5 | 9 | 0 | 3 | 2 | 0 | 0 | 12 | 0 |
| 11 | | R. Ortiz | 9 | 1 | 0.2 | 9/3/2000 |  ANA | @ |  CWS | 121.50 | 0 | 0 | 0 | 0 | 8 | 9 | 0 | 2 | 0 | 0 | 0 | 12 | 1 | |
| 12 | | O. Hernandez | 9 | 1 | 0.2 | 6/18/2000 |  NYY | vs | CWS | L | 121.50 | 1 | 0 | 0 | 0 | 6 | 9 | 1 | 3 | 0 | 0 | 0 | 11 | 0 |
| 13 |  | B. Gibson | 9 | 1 | 0.2 | 6/29/1967 | STL | vs |  SFG | L | 121.50 | 1 | 0 | 0 | 0 | 7 | 9 | 0 | 2 | 0 | 0 | 1 | 11 | 0 |
| 14 | | L. Brissie | 9 | 1 | 0.1 | 6/18/1950 |  PHA | @ | CLE | L | 243.00 | 0 | 0 | 0 | 0 | 3 | 9 | 0 | 6 | 0 | 0 | 0 | 10 | 0 |
| 15 | | L. Mangum | 9 | 1 | 0.2 | 7/28/1924 | CWS | vs | NYY | L | 121.50 | 1 | 0 | 0 | 0 | 8 | 9 | 0 | 1 | 0 | 0 | 11 | 0 | |
| 16 | | B. Pfaadt | 8 | 1 | 0.0 | 5/31/2025 |  AZ | vs | WSH | L | 0 | 0 | 0 | 0 | 6 | 8 | 0 | 0 | 2 | 0 | 0 | 8 | 0 | |
| 17 | | D. Thorpe | 8 | 1 | 0.2 | 7/26/2024 | CWS | vs |  SEA | L | 108.00 | 1 | 0 | 0 | 0 | 6 | 8 | 3 | 2 | 0 | 0 | 0 | 10 | 0 |
| 18 |  | C. Rodón | 8 | 1 | 0.0 | 9/29/2023 | NYY | @ | KCR | L | 0 | 0 | 0 | 0 | 6 | 8 | 1 | 2 | 0 | 0 | 0 | 8 | 0 | |
| 19 | | M. Shoemaker | 8 | 1 | 0.1 | 6/4/2021 |  MIN | @ | KCR | L | 216.00 | 1 | 0 | 0 | 0 | 6 | 9 | 1 | 2 | 0 | 0 | 0 | 10 | 0 |
| 20 | | D. Lynch IV | 8 | 1 | 0.2 | 5/8/2021 | KCR | vs | CWS | L | 108.00 | 0 | 0 | 0 | 0 | 7 | 8 | 1 | 1 | 0 | 0 | 0 | 10 | 0 |
| 21 | | G. Márquez | 8 | 1 | 0.2 | 5/4/2021 |  COL | vs | SFG | L | 108.00 | 1 | 0 | 0 | 0 | 6 | 8 | 0 | 2 | 0 | 0 | 0 | 10 | 0 |
| 22 | | L. Lynn | 8 | 1 | 0.2 | 9/23/2017 | STL | @ | PIT | L | 108.00 | 1 | 0 | 0 | 0 | 6 | 8 | 0 | 2 | 0 | 0 | 0 | 10 | 0 |
| 23 |  | N. Eovaldi | 8 | 1 | 0.2 | 6/16/2015 | NYY | @ |  MIA | L | 108.00 | 0 | 0 | 0 | 0 | 9 | 8 | 0 | 0 | 0 | 0 | 0 | 11 | 0 |
| 24 |  | F. Hernandez | 8 | 1 | 0.1 | 6/12/2015 | SEA | @ | HOU | L | 216.00 | 1 | 0 | 0 | 0 | 5 | 8 | 2 | 2 | 0 | 0 | 0 | 9 | 0 |
| 25 | | C. Frias | 8 | 1 | 0.2 | 9/17/2014 | LAD | @ | COL | L | 108.00 | 0 | 0 | 0 | 0 | 10 | 8 | 1 | 0 | 0 | 0 | 0 | 11 | 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.
Rangers 
Athletics 
Mets 
Cubs 
Brewers 
Padres 
Rays 
Guardians 
BOS 
TOR 
BAL 
