Bob Blewett vs. Jose Castillo — Career Comparison

Looking at the career totals, Bob Blewett and Jose Castillo are fairly close on the surface numbers. Jose Castillo posted stronger numbers in ERA (4.11 vs 4.82) and WHIP (1.355 vs 1.643). Bob Blewett had the advantage in home runs allowed (0 per nine innings vs 0.87). By the career numbers, Jose 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.