Paul Boris vs. Alberto Castillo — Career Comparison

Looking at the career totals, Paul Boris and Alberto Castillo are fairly close on the surface numbers. Paul Boris posted stronger numbers in ERA (3.99 vs 4.33) and WHIP (1.369 vs 1.541). Alberto Castillo had the advantage in home runs allowed (1.19 per nine innings vs 1.45). By the career numbers, Paul Boris 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.