John Perkovich vs. Mike Proly — Career Comparison

On the career pitching numbers, Mike Proly posted a stronger line than John Perkovich. Mike Proly posted stronger numbers in ERA (3.23 vs 7.2) and WHIP (1.404 vs 1.600). By the career numbers, Mike Proly 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.