Jonathan Aro vs. Keith MacWhorter — Career Comparison

On the career pitching numbers, Keith MacWhorter posted a stronger line than Jonathan Aro. Keith MacWhorter posted stronger numbers in ERA (5.53 vs 6.55) and WHIP (1.583 vs 1.909). By the career numbers, Keith MacWhorter 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.