John Perkovich vs. Mauro Zarate — Career Comparison

On the career pitching numbers, John Perkovich posted a stronger line than Mauro Zarate. John Perkovich posted stronger numbers in ERA (7.2 vs 10.8) and WHIP (1.600 vs 2.400). By the career numbers, John Perkovich 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.