Alberto Castillo vs. Mutt Williams — Career Comparison

Looking at the career totals, Alberto Castillo and Mutt Williams are fairly close on the surface numbers. Mutt Williams posted stronger numbers in WHIP (1.364 vs 1.541) and home runs allowed (0.82 per nine innings vs 1.19). Alberto Castillo had the advantage in ERA (4.33 vs 4.91). By the career numbers, Mutt Williams 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.