Bobby Castillo vs. Grant Dayton — Career Comparison

Looking at the career totals, Bobby Castillo and Grant Dayton are fairly close on the surface numbers. Grant Dayton posted stronger numbers in ERA (3.43 vs 3.94) and WHIP (1.212 vs 1.431). Bobby Castillo had the advantage in home runs allowed (0.88 per nine innings vs 1.67). By the career numbers, Grant Dayton 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.