Boof Bonser vs. Luis Castillo — Career Comparison

Looking at the career totals, Boof Bonser and Luis Castillo are fairly close on the surface numbers. Luis Castillo posted stronger numbers in ERA (5.06 vs 5.18) and home runs allowed (0 per nine innings vs 1.36). Boof Bonser had the advantage in WHIP (1.471 vs 1.969). By the career numbers, Luis Castillo 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.