John Perkovich vs. Roberto Rodriguez — Career Comparison

On the career pitching numbers, Roberto Rodriguez posted a stronger line than John Perkovich. Roberto Rodriguez posted stronger numbers in ERA (4.81 vs 7.2) and WHIP (1.496 vs 1.600). By the career numbers, Roberto Rodriguez 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.