Mark Leiter vs. John Martin — Career Comparison

On the career pitching numbers, John Martin posted a stronger line than Mark Leiter. John Martin posted stronger numbers in ERA (3.94 vs 4.57) and WHIP (1.237 vs 1.412). By the career numbers, John Martin 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.