Ralph Erickson vs. Troy Percival — Career Comparison

Looking at the career totals, Ralph Erickson and Troy Percival are fairly close on the surface numbers. Troy Percival posted stronger numbers in ERA (3.17 vs 8.4) and WHIP (1.143 vs 2.333). Ralph Erickson had the advantage in home runs allowed (0.6 per nine innings vs 1.08). By the career numbers, Troy Percival 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.