John Firth vs. Jae Kuk Ryu — Career Comparison

Looking at the career totals, John Firth and Jae Kuk Ryu are fairly close on the surface numbers. Jae Kuk Ryu posted stronger numbers in ERA (7.49 vs 8) and WHIP (1.840 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 2.04). By the career numbers, Jae Kuk Ryu 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.