Justin Verlander has the best career ERA by an active starting pitcher when pitching at least 3000 innings, with an ERA of 3.31.
Interpreted as:
lowest era by an active starter all-time with 3000 or more ip| NAME | ERA | IP | G | W | L | W% | GS | SO | CG | SHO | SV | 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. Verlander | 3.31 | 3467.2 | 536 | 262 | 150 | .636 | 536 | 3,457 | 26 | 9 | 0 | 2,943 | 1,277 | 1,381 | 363 | 973 | 116 | 0 | 27 | 14,170 | 97 | 8.97 | 2.53 | 3.55 | 0.94 | 24.4 | 6.9 | 1.13 | .279 | 3.58 | 7.64 |
StatMuse has game-level data for ERA and innings pitched going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
Tigers 
Twins 
Guardians 
Royals 
White Sox 
CHC 
BAL 
Yankees 
Rays 
Astros 
Mariners 
Mets 
Phillies 
Cardinals 
Dodgers 
Padres 
CIN 
PIT 
MIL 
AZ 
ATL 
TOR 
ATH 
