Bobby Castillo vs. John Deering — Career Comparison

On the career pitching numbers, John Deering posted a stronger line than Bobby Castillo. John Deering posted stronger numbers in ERA (3.8 vs 3.94) and home runs allowed (0.22 per nine innings vs 0.88). By the career numbers, John Deering 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.