Aaron Laffey vs. John Singleton — Career Comparison

Looking at the career totals, Aaron Laffey and John Singleton are fairly close on the surface numbers. Aaron Laffey posted stronger numbers in ERA (4.44 vs 5.9) and WHIP (1.535 vs 1.774). John Singleton had the advantage in home runs allowed (0.58 per nine innings vs 0.87). By the career numbers, Aaron Laffey 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.