John Perkovich vs. John Ryan — Career Comparison

On the career pitching numbers, John Ryan posted a stronger line than John Perkovich. John Ryan posted stronger numbers in ERA (3.35 vs 7.2) and WHIP (1.510 vs 1.600). By the career numbers, John Ryan 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.