Jonathan Aro vs. Layne Somsen — Career Comparison

On the career pitching numbers, Jonathan Aro posted a stronger line than Layne Somsen. Jonathan Aro posted stronger numbers in ERA (6.55 vs 19.29) and WHIP (1.909 vs 3.857). By the career numbers, Jonathan Aro 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.