The Louisville Colonels have given up the most runs by a team in a game, with 36 runs versus the Chicago Colts on June 29, 1897.
Interpreted as:
most runs allowed in a regular-season game by an MLB team| TEAM | R | DATE | TM | OPP | RESULT | ERA | SO | SHO | SV | IP | H | ER | HR | BB | HBP | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Colonels | 36 | 6/29/1897 | LOU | @ |  CHI | L 7-36 | ||||||||||||||||||||||||
| 2 | Blues | 35 | 7/24/1882 | CLE | @ | CWS | L 4-35 | ||||||||||||||||||||||||
| 3 | Bisons | 31 | 7/3/1883 | BUF | @ | CWS | L 7-31 | ||||||||||||||||||||||||
| 4 |  | Orioles | 30 | 8/22/2007 |  BAL | vs |  TEX | L 3-30 | 30.00 | 11 | 0 | 0 | 9.0 | 29 | 30 | 6 | 8 | 0 | 0 | 65 | 1 | 11.00 | 8.00 | 1.38 | 6.00 | 16.9 | 12.3 | 4.11 | .575 | 30.00 | 29.00 |
| 5 | Colonels | 30 | 6/18/1893 | LOU | @ |  CIN | L 12-30 | ||||||||||||||||||||||||
| 6 |  | Senators | 30 | 9/10/1891 |  WSH | @ |  MIL | L 3-30 | |||||||||||||||||||||||
| 7 | Bisons | 30 | 6/26/1890 | BUF | vs | PHP | L 12-30 | ||||||||||||||||||||||||
| 8 | Wolverines | 30 | 6/9/1883 | DET | @ |  BSN | L 8-30 | ||||||||||||||||||||||||
| 9 | Grays | 30 | 7/22/1876 | LOU | @ | CWS | L 7-30 | ||||||||||||||||||||||||
| 10 |  | Marlins | 29 | 9/9/2020 |  MIA | @ | ATL | L 9-29 | 30.38 | 9 | 0 | 0 | 8.0 | 23 | 27 | 7 | 9 | 1 | 0 | 58 | 0 | 10.13 | 10.13 | 1.00 | 7.88 | 15.5 | 15.5 | 4.00 | .500 | 32.63 | 25.88 |
| 11 |  | Athletics | 29 | 4/23/1955 |  KCA | vs |  CWS | L 6-29 | 27.00 | 4 | 0 | 0 | 9.0 | 29 | 27 | 7 | 6 | 1 | 1 | 63 | 1 | 4.00 | 6.00 | 0.67 | 7.00 | 6.3 | 9.5 | 3.89 | .489 | 29.00 | 29.00 |
| 12 |  | Browns | 29 | 6/8/1950 |  SLA | @ |  BSA | L 4-29 | 29.25 | 2 | 0 | 0 | 8.0 | 28 | 26 | 7 | 11 | 0 | 0 | 64 | 0 | 2.25 | 12.38 | 0.18 | 7.88 | 3.1 | 17.2 | 4.88 | .477 | 32.63 | 31.50 |
| 13 | Colonels | 29 | 8/17/1894 | LOU | @ |  PHI | L 4-29 | ||||||||||||||||||||||||
| 14 |  | Quakers | 29 | 6/15/1887 | PHN | @ |  NYG | L 1-29 | |||||||||||||||||||||||
| 15 | | Quakers | 29 | 6/20/1883 | PHN | @ | BSN | L 4-29 | |||||||||||||||||||||||
| 16 |  | Red Sox | 28 | 7/22/2022 |  BOS | vs |  TOR | L 5-28 | 27.00 | 9 | 0 | 0 | 9.0 | 29 | 27 | 5 | 5 | 1 | 0 | 63 | 2 | 9.00 | 5.00 | 1.80 | 5.00 | 14.3 | 7.9 | 3.78 | .558 | 28.00 | 29.00 |
| 17 | | Phillies | 28 | 7/6/1929 | PHN | vs |  SLN | L 6-28 | 0.00 | 1 | 0 | 0 | 9.0 | 28 | 0 | 2 | 9 | 1 | 65 | 0 | 1.00 | 9.00 | 0.11 | 2.00 | 1.5 | 13.8 | 4.11 | .500 | 28.00 | 28.00 | |
| 18 |  | Browns | 28 | 9/3/1896 | STL | @ |  BSN | L 7-28 | |||||||||||||||||||||||
| 19 |  | Grooms | 28 | 8/25/1891 |  BKN | @ | CHI | L 5-28 | |||||||||||||||||||||||
| 20 | Bisons | 28 | 7/12/1890 | BUF | @ | BKP | L 16-28 | ||||||||||||||||||||||||
| 21 | Spiders | 28 | 4/23/1888 | CLE | @ |  PHA | L 7-28 | ||||||||||||||||||||||||
| 22 |  | Alleghenys | 28 | 8/27/1887 |  PIT | @ | BSN | L 14-28 | |||||||||||||||||||||||
| 23 | Spiders | 28 | 4/30/1887 | CLE | @ | STL | L 11-28 | ||||||||||||||||||||||||
| 24 | | Quakers | 28 | 8/21/1883 | PHN | @ | PRO | L 0-28 | |||||||||||||||||||||||
| 25 |  | Mutuals | 28 | 5/13/1876 |  NYM | @ | HAR | L 3-28 | |||||||||||||||||||||||
Results may be incomplete. StatMuse has complete team, game-level data for runs allowed going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
Yankees 
Rays 
Tigers 
Guardians 
Astros 
Mariners 
Mets 
Brewers 
KCR 
MIN 
LAA 
BAL 
ATH 
