Roy Castleton vs. Carson Spiers — Career Comparison

On the career pitching numbers, Roy Castleton posted a stronger line than Carson Spiers. Roy Castleton posted stronger numbers in ERA (2.68 vs 5.69) and WHIP (1.260 vs 1.573). By the career numbers, Roy Castleton 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.