21 teams are tied for the highest winning percentage in a game, winning 100.0 percent of the time. The first three are the Atlanta Braves yesterday and the Toronto Blue Jays and the Washington Nationals yesterday and on Wednesday.
Interpreted as:
MLB record for win percentage in a month minimum 20 regular-season games| TEAM | W% | DATE | TM | OPP | RESULT | W | L | AB | R | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | OBP | SLG | OPS | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Braves | 1.000 | 5/29/2025 |  ATL | @ |  PHI | W 9-3 | 1 | 0 | 35 | 9 | 8 | 2 | 0 | 2 | 9 | 8 | 0 | 7 | 0 | 0 | 43 | 16 | 4 | 0 | 0 | 0 | 0 | .229 | .372 | .457 | .829 |
| 2 |  | Blue Jays | 1.000 | 5/29/2025 |  TOR | vs |  ATH | W 12-0 | 1 | 0 | 41 | 12 | 18 | 3 | 0 | 4 | 12 | 5 | 0 | 3 | 1 | 0 | 47 | 33 | 7 | 0 | 1 | 0 | 0 | .439 | .489 | .805 | 1.294 |
| 3 |  | Nationals | 1.000 | 5/29/2025 |  WSH | @ |  SEA | W 9-3 | 1 | 0 | 39 | 9 | 12 | 3 | 0 | 1 | 9 | 4 | 0 | 8 | 1 | 1 | 44 | 18 | 4 | 0 | 1 | 1 | 1 | .308 | .364 | .462 | .825 |
| 4 |  | Phillies | 1.000 | 5/29/2025 | PHI | vs | ATL | W 5-4 | 1 | 0 | 31 | 5 | 10 | 0 | 0 | 2 | 5 | 4 | 2 | 7 | 1 | 1 | 38 | 16 | 2 | 1 | 0 | 0 | 1 | .323 | .432 | .516 | .949 |
| 5 |  | Rays | 1.000 | 5/29/2025 |  TBR | @ |  HOU | W 13-3 | 1 | 0 | 40 | 13 | 14 | 5 | 0 | 1 | 12 | 6 | 3 | 11 | 5 | 0 | 50 | 22 | 6 | 0 | 1 | 0 | 0 | .350 | .460 | .550 | 1.010 |
| 6 |  | Guardians | 1.000 | 5/28/2025 |  CLE | vs |  LAD | W 7-4 | 1 | 0 | 36 | 7 | 15 | 3 | 0 | 1 | 7 | 4 | 0 | 9 | 0 | 0 | 40 | 21 | 4 | 0 | 0 | 1 | 1 | .417 | .475 | .583 | 1.058 |
| 7 |  | White Sox | 1.000 | 5/28/2025 |  CWS | @ |  NYM | W 9-4 | 1 | 0 | 39 | 9 | 12 | 5 | 1 | 1 | 9 | 6 | 0 | 6 | 0 | 0 | 47 | 22 | 7 | 1 | 1 | 0 | 0 | .308 | .391 | .564 | .955 |
| 8 |  | Brewers | 1.000 | 5/28/2025 |  MIL | vs |  BOS | W 6-5 | 1 | 0 | 36 | 6 | 8 | 2 | 0 | 1 | 6 | 5 | 0 | 5 | 1 | 0 | 43 | 13 | 3 | 1 | 1 | 1 | 0 | .222 | .310 | .361 | .671 |
| 9 |  | Pirates | 1.000 | 5/28/2025 |  PIT | @ |  AZ | W 10-1 | 1 | 0 | 39 | 10 | 11 | 2 | 1 | 1 | 9 | 3 | 0 | 9 | 1 | 0 | 42 | 18 | 4 | 0 | 0 | 0 | 1 | .282 | .333 | .462 | .795 |
| 10 |  | Cardinals | 1.000 | 5/28/2025 |  STL | @ |  BAL | W 6-4 | 1 | 0 | 38 | 6 | 12 | 4 | 0 | 1 | 6 | 5 | 0 | 16 | 0 | 0 | 43 | 19 | 5 | 0 | 0 | 0 | 1 | .316 | .395 | .500 | .895 |
| 11 |  | Royals | 1.000 | 5/28/2025 |  KCR | vs |  CIN | W 3-2 | 1 | 0 | 28 | 3 | 8 | 2 | 0 | 0 | 3 | 4 | 0 | 5 | 1 | 1 | 34 | 10 | 2 | 1 | 1 | 0 | 0 | .286 | .364 | .357 | .721 |
| 12 |  | Tigers | 1.000 | 5/28/2025 |  DET | vs |  SFG | W 4-3 | 1 | 0 | 32 | 4 | 7 | 2 | 0 | 0 | 4 | 2 | 2 | 16 | 0 | 0 | 36 | 9 | 2 | 0 | 0 | 0 | 0 | .219 | .306 | .281 | .587 |
| 13 | | Nationals | 1.000 | 5/28/2025 | WSH | @ | SEA | W 9-0 | 1 | 0 | 38 | 9 | 12 | 4 | 0 | 4 | 9 | 4 | 1 | 6 | 1 | 0 | 43 | 28 | 8 | 0 | 0 | 0 | 2 | .316 | .395 | .737 | 1.132 |
| 14 |  | Marlins | 1.000 | 5/28/2025 |  MIA | @ |  SDP | W 10-8 | 1 | 0 | 38 | 10 | 13 | 3 | 0 | 3 | 9 | 1 | 1 | 5 | 0 | 0 | 41 | 25 | 6 | 1 | 0 | 0 | 0 | .342 | .375 | .658 | 1.033 |
| 15 | | Rays | 1.000 | 5/28/2025 | TBR | vs |  MIN | W 5-0 | 1 | 0 | 31 | 5 | 8 | 0 | 0 | 2 | 4 | 3 | 0 | 7 | 3 | 0 | 34 | 14 | 2 | 0 | 0 | 0 | 1 | .258 | .324 | .452 | .775 |
| 16 |  | Yankees | 1.000 | 5/28/2025 |  NYY | @ |  LAA | W 1-0 | 1 | 0 | 32 | 1 | 7 | 3 | 0 | 0 | 1 | 5 | 0 | 13 | 1 | 0 | 38 | 10 | 3 | 0 | 1 | 2 | 1 | .219 | .316 | .313 | .628 |
| 17 | | Blue Jays | 1.000 | 5/28/2025 | TOR | @ |  TEX | W 2-0 | 1 | 0 | 33 | 2 | 8 | 1 | 0 | 1 | 2 | 3 | 0 | 9 | 1 | 0 | 37 | 12 | 2 | 1 | 0 | 0 | 1 | .242 | .306 | .364 | .669 |
| 18 |  | Astros | 1.000 | 5/28/2025 | HOU | vs | ATH | W 5-3 | 1 | 0 | 31 | 5 | 7 | 0 | 0 | 1 | 5 | 4 | 1 | 5 | 1 | 0 | 37 | 10 | 1 | 0 | 1 | 0 | 0 | .226 | .324 | .323 | .647 |
| 19 |  | Cubs | 1.000 | 5/28/2025 |  CHC | vs |  COL | W 2-1 | 1 | 0 | 27 | 2 | 6 | 1 | 0 | 1 | 2 | 3 | 0 | 3 | 1 | 0 | 30 | 10 | 2 | 0 | 0 | 0 | 3 | .222 | .300 | .370 | .670 |
| 20 | | Cardinals | 1.000 | 5/27/2025 | STL | @ | BAL | W 7-4 | 1 | 0 | 40 | 7 | 14 | 1 | 2 | 2 | 7 | 2 | 0 | 9 | 0 | 0 | 42 | 25 | 5 | 0 | 0 | 0 | 0 | .350 | .381 | .625 | 1.006 |
| 21 |  | Padres | 1.000 | 5/27/2025 | SDP | vs | MIA | W 8-6 | 1 | 0 | 38 | 8 | 13 | 1 | 0 | 2 | 7 | 4 | 0 | 5 | 0 | 0 | 43 | 20 | 3 | 0 | 1 | 0 | 0 | .342 | .395 | .526 | .922 |
| 22 |  | Mariners | 1.000 | 5/27/2025 | SEA | vs | WSH | W 9-1 | 1 | 0 | 36 | 9 | 12 | 2 | 0 | 3 | 8 | 4 | 1 | 8 | 0 | 0 | 41 | 23 | 5 | 0 | 0 | 0 | 1 | .333 | .415 | .639 | 1.054 |
| 23 | | Brewers | 1.000 | 5/27/2025 | MIL | vs | BOS | W 5-1 | 1 | 0 | 34 | 5 | 7 | 2 | 0 | 1 | 5 | 4 | 2 | 8 | 2 | 0 | 40 | 12 | 3 | 0 | 0 | 0 | 1 | .206 | .325 | .353 | .678 |
| 24 |  | Twins | 1.000 | 5/27/2025 | MIN | @ | TBR | W 4-2 | 1 | 0 | 33 | 4 | 7 | 2 | 0 | 1 | 3 | 1 | 1 | 10 | 0 | 0 | 36 | 12 | 3 | 0 | 1 | 0 | 1 | .212 | .250 | .364 | .614 |
| 25 | | Cubs | 1.000 | 5/27/2025 | CHC | vs | COL | W 4-3 | 1 | 0 | 40 | 4 | 10 | 1 | 0 | 0 | 4 | 4 | 0 | 9 | 6 | 1 | 44 | 11 | 1 | 0 | 0 | 1 | 0 | .250 | .318 | .275 | .593 |
Some of the information used here was obtained free of charge from Retrosheet.
