4 players are tied for the most bases on balls in a game, with 6 bases on balls. The first three are Bryce Harper on May 8, 2016, Jeff Bagwell on August 20, 1999 and Andre Thornton on May 2, 1984.
Interpreted as:
most walks by a single player in a MLB regular-season game| NAME | BB | DATE | TM | OPP | AB | R | H | 2B | 3B | HR | RBI | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | B. Harper | 6 | 5/8/2016 |  WSH | @ |  CHC | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 3 | 0 |
| 2 |  | J. Bagwell | 6 | 8/20/1999 |  HOU | @ |  FLA | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | 0 | 0 | 0 | 0 | 2 | 0 |
| 3 |  | A. Thornton | 6 | 5/2/1984 |  CLE | @ |  BAL | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 2 | 0 |
| 4 |  | J. Foxx | 6 | 6/16/1938 |  BSA | @ |  SLA | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | |||
| 5 |  | F. Freeman | 5 | 6/17/2024 |  LAD | @ |  COL | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 1 | 0 | 0 | 0 | 1 | 0 |
| 6 |  | M. Chapman | 5 | 8/12/2021 |  OAK | @ | CLE | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| 7 |  | M. Muncy | 5 | 4/25/2021 | LAD | vs |  SDP | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 1 | 0 |
| 8 |  | C. Yelich | 5 | 9/26/2018 |  MIL | @ |  STL | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 9 | | B. Harper | 5 | 9/18/2018 | WSH | @ |  MIA | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 10 |  | R. Odor | 5 | 8/2/2018 |  TEX | vs |  BAL | 1 | 3 | 1 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 6 | 4 | 1 | 0 | 0 | 0 | 0 |
| 11 |  | J. Votto | 5 | 8/27/2017 |  CIN | vs |  PIT | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 12 |  | M. Holliday | 5 | 4/9/2017 |  NYY | @ | BAL | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 13 |  | S. Souza Jr. | 5 | 6/15/2015 |  TBR | vs | WSH | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 14 |  | M. Cabrera | 5 | 8/10/2014 |  TOR | vs |  DET | 5 | 0 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 10 | 3 | 0 | 0 | 0 | 2 | 0 |
| 15 | | M. Joyce | 5 | 4/25/2014 | TBR | @ |  CWS | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 16 | | J. Votto | 5 | 9/23/2013 | CIN | vs |  NYM | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 1 | 0 |
| 17 |  | T. Campana | 5 | 8/24/2013 |  ARI | @ |  PHI | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 10 | 1 | 0 | 0 | 0 | 0 | 0 |
| 18 | | C. Pennington | 5 | 8/24/2013 | ARI | @ | PHI | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 1 | 0 | 0 | 0 | 1 | 1 |
| 19 |  | M. Baxter | 5 | 8/4/2012 | NYM | @ |  SDP | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 20 |  | A. Gordon | 5 | 6/17/2012 |  KCR | @ | STL | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 |
| 21 |  | C. Rasmus | 5 | 5/22/2011 | STL | @ | KCR | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| 22 | | K. Youkilis | 5 | 5/15/2010 |  BOS | @ | DET | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| 23 | | M. Teixeira | 5 | 4/25/2009 | NYY | @ | BOS | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 1 | 0 |
| 24 | | A. Gordon | 5 | 7/30/2008 | KCR | @ | OAK | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 2 | 0 |
| 25 | | M. Bradley | 5 | 4/16/2008 | TEX | @ |  TOR | 3 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 8 | 3 | 1 | 0 | 0 | 2 | 0 |
Results may be incomplete. StatMuse has complete game-level data for walks going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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LAA 
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