Jonathan Aro vs. Bill Bell — Career Comparison

On the career pitching numbers, Bill Bell posted a stronger line than Jonathan Aro. Bill Bell posted stronger numbers in ERA (4.32 vs 6.55) and WHIP (1.800 vs 1.909). By the career numbers, Bill Bell 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.