Aurelio Lopez vs. Leon Williams — Career Comparison

Looking at the career totals, Aurelio Lopez and Leon Williams are fairly close on the surface numbers. Aurelio Lopez posted stronger numbers in ERA (3.56 vs 5.4) and WHIP (1.309 vs 2.160). Leon Williams had the advantage in home runs allowed (0 per nine innings vs 1.01). By the career numbers, Aurelio Lopez 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.