league era before all-star break in 2021
| LEAGUE | ERA | SEASON | G | W% | W | L | SO | SHO | SV | IP | H | ER | R | HR | BB | HBP | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NL | 4.03 | 2021 | 1,352 | .497 | 672 | 680 | 11,969 | 10 | 330 | 11803.0 | 10,476 | 5,287 | 5,861 | 1,526 | 4,564 | 651 | 247 | 50,253 | 491 | 9.13 | 3.48 | 2.62 | 1.16 | 23.8 | 9.1 | 1.27 | .284 | 4.47 | 7.99 |
| 2 | AL | 4.33 | 2021 | 1,344 | .503 | 676 | 668 | 11,929 | 10 | 320 | 11791.0 | 11,001 | 5,670 | 6,183 | 1,669 | 4,406 | 520 | 122 | 50,333 | 605 | 9.11 | 3.36 | 2.71 | 1.27 | 23.7 | 8.8 | 1.31 | .293 | 4.72 | 8.40 |
StatMuse has team, game-level data for ERA going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
Phillies 
Mets 
Brewers 
Cubs 
Padres 
Dodgers 
Blue Jays 
Red Sox 
Tigers 
Guardians 
Astros 
Mariners 
BAL 
AZ 
TBR 
NYY 
CIN 
MIN 
ATL 
