| NAME | MONTH | ERA | G | W | L | W% | GS | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Hader | May 2025 | 1.29 | 7 | 0 | 0 | 0 | 9 | 0 | 0 | 4 | 7.0 | 3 | 1 | 1 | 1 | 2 | 1 | 7 | 0 | 28 | 0 | 11.57 | 2.57 | 4.50 | 1.29 | 32.1 | 7.1 | 0.71 | .133 | 1.29 | 3.86 |
StatMuse has game-level data for ERA going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
Mariners 
Astros 
Angels 
Rangers 
Athletics 
TBR 
Phillies 
Mets 
Cubs 
Cardinals 
Dodgers 
Giants 
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Red Sox 
Tigers 
Guardians 
ATL 
PIT 
WSH 
MIL 
CWS 
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