Mark Leiter vs. Len Swormstedt — Career Comparison

On the career pitching numbers, Len Swormstedt posted a stronger line than Mark Leiter. Len Swormstedt posted stronger numbers in ERA (2.22 vs 4.57) and WHIP (1.046 vs 1.412). By the career numbers, Len Swormstedt 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.