Billy Holland vs. Paul Pettit — Career Comparison

On the career pitching numbers, Billy Holland posted a stronger line than Paul Pettit. Billy Holland posted stronger numbers in ERA (2.27 vs 7.34) and WHIP (1.137 vs 1.826). By the career numbers, Billy Holland 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.