Bill Donovan vs. Ben Kozlowski — Career Comparison

On the career pitching numbers, Bill Donovan posted a stronger line than Ben Kozlowski. Bill Donovan posted stronger numbers in ERA (2.69 vs 6.3) and WHIP (1.245 vs 2.200). By the career numbers, Bill Donovan 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.