The Pittsburgh Pirates had their most runs in a game against the Boston Beaneaters on June 6, 1894, with 27 runs.
Interpreted as:
most runs scored regular-season game by pittsburgh pirates| TEAM | R | DATE | TM | OPP | RESULT | AB | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | OBP | SLG | OPS | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Pirates | 27 | 6/6/1894 |  PIT | @ |  BSN | W 27-11 | ||||||||||||||||||||||
| 2 | | Pirates | 25 | 8/1/1893 | PIT | @ |  STL | W 25-2 | ||||||||||||||||||||||
| 3 |  | Pirates | 24 | 6/22/1925 |  PIT | @ | SLN | W 24-6 | 51 | 21 | 4 | 0 | 6 | 20 | 7 | 1 | 0 | 2 | 0 | 60 | 43 | 10 | 1 | .412 | .492 | .843 | 1.335 | |||
| 4 | | Pirates | 23 | 4/27/1912 | PIT | vs |  CIN | W 23-4 | 43 | 27 | 5 | 3 | 0 | 20 | 5 | 0 | 1 | 8 | 51 | 38 | 8 | 3 | .628 | .667 | .884 | 1.550 | ||||
| 5 | | Pirates | 23 | 7/18/1895 | PIT | vs |  PHI | W 23-6 | ||||||||||||||||||||||
| 6 | | Alleghenys | 23 | 8/9/1887 | PIT | vs |  BSN | W 23-3 | ||||||||||||||||||||||
| 7 | | Pirates | 22 | 9/16/1975 | PIT | @ |  CHC | W 22-0 | 53 | 24 | 2 | 1 | 2 | 21 | 6 | 1 | 5 | 0 | 0 | 61 | 34 | 5 | 0 | 1 | 0 | 0 | .453 | .508 | .642 | 1.150 |
| 8 | | Pirates | 22 | 9/3/1894 | PIT | vs |  WSH | W 22-1 | ||||||||||||||||||||||
| 9 | | Pirates | 21 | 6/20/1925 | PIT | vs |  BKN | W 21-5 | 47 | 25 | 3 | 3 | 4 | 19 | 5 | 1 | 0 | 0 | 1 | 54 | 46 | 10 | 1 | .532 | .585 | .979 | 1.564 | |||
| 10 | | Pirates | 20 | 8/1/1970 | PIT | @ | ATL | W 20-10 | 47 | 22 | 7 | 3 | 4 | 18 | 6 | 1 | 6 | 0 | 0 | 54 | 47 | 14 | 0 | 0 | 1 | 1 | .468 | .537 | 1.000 | 1.537 |
| 11 | | Pirates | 20 | 5/15/1935 | PIT | @ | PHN | W 20-5 | 50 | 19 | 3 | 0 | 3 | 17 | 5 | 0 | 3 | 0 | 0 | 55 | 31 | 6 | 0 | 0 | .380 | .436 | .620 | 1.056 | ||
| 12 | | Pirates | 20 | 8/22/1907 | PIT | @ |  NYG | W 20-5 | 43 | 22 | 3 | 1 | 0 | 9 | 1 | 5 | 2 | 54 | 27 | 4 | 1 | .512 | .604 | .628 | 1.232 | |||||
| 13 | | Pirates | 20 | 5/14/1896 | PIT | vs | BSN | W 20-4 | ||||||||||||||||||||||
| 14 | | Alleghenys | 20 | 4/23/1890 | PTN | vs | CLN | W 20-12 | ||||||||||||||||||||||
| 15 | | Pirates | 19 | 9/26/1992 | PIT | vs |  NYM | W 19-2 | 43 | 20 | 5 | 2 | 3 | 18 | 8 | 0 | 4 | 1 | 0 | 51 | 38 | 10 | 0 | 0 | 1 | 1 | .465 | .549 | .884 | 1.433 |
| 16 | | Pirates | 19 | 8/21/1968 | PIT | @ | CIN | W 19-1 | 47 | 23 | 3 | 1 | 3 | 18 | 6 | 0 | 10 | 2 | 0 | 54 | 37 | 7 | 1 | 0 | 0 | 1 | .489 | .547 | .787 | 1.334 |
| 17 | | Pirates | 19 | 8/3/1961 | PIT | @ | STL | W 19-0 | 50 | 24 | 7 | 0 | 3 | 19 | 5 | 0 | 4 | 0 | 0 | 55 | 40 | 10 | 0 | 0 | 1 | 1 | .480 | .527 | .800 | 1.327 |
| 18 | | Pirates | 19 | 6/14/1930 | PIT | @ | PHN | W 19-12 | 40 | 21 | 7 | 1 | 0 | 19 | 7 | 0 | 2 | 1 | 0 | 51 | 30 | 8 | 4 | .525 | .596 | .750 | 1.346 | |||
| 19 | | Pirates | 19 | 8/8/1922 | PIT | @ | PHN | W 19-8 | 52 | 27 | 4 | 0 | 3 | 17 | 2 | 1 | 3 | 1 | 0 | 55 | 40 | 7 | 0 | .519 | .545 | .769 | 1.315 | |||
| 20 | | Pirates | 19 | 6/25/1912 | PIT | @ |  SLN | W 19-3 | 47 | 22 | 2 | 1 | 1 | 18 | 5 | 0 | 1 | 0 | 53 | 29 | 4 | 1 | .468 | .519 | .617 | 1.136 | ||||
| 21 | | Pirates | 19 | 6/11/1904 | PIT | @ | BSN | W 19-1 | 45 | 17 | 4 | 1 | 0 | 14 | 5 | 0 | 1 | 3 | 51 | 23 | 5 | 1 | .378 | .440 | .511 | .951 | ||||
| 22 | | Pirates | 19 | 7/8/1896 | PIT | vs | WSH | W 19-0 | ||||||||||||||||||||||
| 23 | | Pirates | 19 | 7/10/1894 | PIT | @ |  BAL | W 19-9 | ||||||||||||||||||||||
| 24 | | Pirates | 19 | 7/15/1893 | PIT | vs | WSH | W 19-0 | ||||||||||||||||||||||
| 25 | | Pirates | 18 | 7/1/2019 | PIT | vs |  CHC | W 18-5 | 46 | 23 | 7 | 0 | 5 | 18 | 3 | 1 | 7 | 1 | 0 | 50 | 45 | 12 | 0 | 0 | 0 | 1 | .500 | .540 | .978 | 1.518 |
Results may be incomplete. StatMuse has complete team, game-level data for runs going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
Brewers 
TEX 
Yankees 
Rays 
Tigers 
Guardians 
Astros 
Mariners 
Dodgers 
Giants 
WSH 
BAL 
CWS 
TOR 
MIA 
