Jake Diekman vs. John Perkovich — Career Comparison

On the career pitching numbers, Jake Diekman posted a stronger line than John Perkovich. Jake Diekman posted stronger numbers in ERA (3.91 vs 7.2) and WHIP (1.431 vs 1.600). By the career numbers, Jake Diekman 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.