Jonathan Aro vs. Roger McDowell — Career Comparison

On the career pitching numbers, Roger McDowell posted a stronger line than Jonathan Aro. Roger McDowell posted stronger numbers in ERA (3.3 vs 6.55) and WHIP (1.479 vs 1.909). By the career numbers, Roger McDowell 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.