Matt Bush vs. Alberto Castillo — Career Comparison

Looking at the career totals, Matt Bush and Alberto Castillo are fairly close on the surface numbers. Matt Bush posted stronger numbers in ERA (3.75 vs 4.33) and WHIP (1.213 vs 1.541). Alberto Castillo had the advantage in home runs allowed (1.19 per nine innings vs 1.41). By the career numbers, Matt Bush 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.