Cam Booser vs. Tony Castillo — Career Comparison

On the career pitching numbers, Tony Castillo posted a stronger line than Cam Booser. Tony Castillo posted stronger numbers in ERA (3.93 vs 4.28) and home runs allowed (0.89 per nine innings vs 1.59). By the career numbers, Tony 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.