John Firth vs. Juan Rincon — Career Comparison

Looking at the career totals, John Firth and Juan Rincon are fairly close on the surface numbers. Juan Rincon posted stronger numbers in ERA (4.03 vs 8) and WHIP (1.424 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 0.73). By the career numbers, Juan Rincon 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.