John Perkovich vs. Minnie Rojas — Career Comparison

On the career pitching numbers, Minnie Rojas posted a stronger line than John Perkovich. Minnie Rojas posted stronger numbers in ERA (3 vs 7.2) and WHIP (1.284 vs 1.600). By the career numbers, Minnie Rojas 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.