John Firth vs. Marc Rzepczynski — Career Comparison

Looking at the career totals, John Firth and Marc Rzepczynski are fairly close on the surface numbers. Marc Rzepczynski posted stronger numbers in ERA (3.89 vs 8) and WHIP (1.502 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 0.75). By the career numbers, Marc Rzepczynski 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.