The Chicago White Stockings had the highest run differential by a team in their first 30 games, with a differential of 128 runs.
| TEAM | DIFF | G | W% | 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 |  | White Stockings | 128 | 30 | .833 | 25 | 5 | 235 | ||||||||||||||||||||||
| 2 |  | Red Stockings | 76 | 30 | .667 | 20 | 10 | 210 | ||||||||||||||||||||||
| 3 |  | Gothams | -4 | 30 | .467 | 14 | 16 | 190 | ||||||||||||||||||||||
| 4 |  | Red Caps | -17 | 30 | .500 | 15 | 15 | 187 | ||||||||||||||||||||||
| 5 |  | Atlantics | -30 | 30 | .400 | 12 | 18 | 150 | ||||||||||||||||||||||
| 6 |  | Alleghenys | -41 | 30 | .400 | 12 | 18 | 174 | ||||||||||||||||||||||
| 7 |  | Browns | -50 | 30 | .300 | 9 | 21 | 145 | ||||||||||||||||||||||
| 8 |  | Quakers | -99 | 30 | .233 | 7 | 23 | 152 |
Some of the information used here was obtained free of charge from Retrosheet.
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