John Firth vs. Mike Roesler — Career Comparison

Looking at the career totals, John Firth and Mike Roesler are fairly close on the surface numbers. Mike Roesler posted stronger numbers in ERA (3.77 vs 8) and WHIP (1.258 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 1.45). By the career numbers, Mike Roesler 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.