John Firth vs. Angel Zerpa — Career Comparison

Looking at the career totals, John Firth and Angel Zerpa are fairly close on the surface numbers. Angel Zerpa posted stronger numbers in ERA (3.97 vs 8) and WHIP (1.350 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 1.12). By the career numbers, Angel Zerpa 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.