Kyle Nelson vs. John Perkovich — Career Comparison

On the career pitching numbers, Kyle Nelson posted a stronger line than John Perkovich. Kyle Nelson posted stronger numbers in ERA (4.34 vs 7.2) and WHIP (1.328 vs 1.600). By the career numbers, Kyle Nelson 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.