Robbie Erlin vs. Joe Ryan — Career Comparison

Looking at the career totals, Robbie Erlin and Joe Ryan are fairly close on the surface numbers. Joe Ryan posted stronger numbers in ERA (3.79 vs 4.87) and WHIP (1.063 vs 1.297). Robbie Erlin had the advantage in home runs allowed (1.13 per nine innings vs 1.42). By the career numbers, Joe Ryan 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.