Grant Bowler vs. Bobby Castillo — Career Comparison

Looking at the career totals, Grant Bowler and Bobby Castillo are fairly close on the surface numbers. Bobby Castillo posted stronger numbers in ERA (3.94 vs 6.91) and WHIP (1.431 vs 1.968). Grant Bowler had the advantage in home runs allowed (0.43 per nine innings vs 0.88). By the career numbers, Bobby 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.