Jonathan Aro vs. Xavier Hernandez — Career Comparison

On the career pitching numbers, Xavier Hernandez posted a stronger line than Jonathan Aro. Xavier Hernandez posted stronger numbers in ERA (3.9 vs 6.55) and WHIP (1.376 vs 1.909). By the career numbers, Xavier Hernandez 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.