Joe Bitker vs. Ernest Groth — Career Comparison

Looking at the career totals, Joe Bitker and Ernest Groth are fairly close on the surface numbers. Joe Bitker posted stronger numbers in ERA (4.73 vs 4.91) and home runs allowed (1.35 per nine innings vs 2.45). Ernest Groth had the advantage in WHIP (1.227 vs 1.500). By the career numbers, Joe Bitker had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.