Jonathan Aro vs. David Lee — Career Comparison

On the career pitching numbers, David Lee posted a stronger line than Jonathan Aro. David Lee posted stronger numbers in ERA (4.37 vs 6.55) and WHIP (1.665 vs 1.909). By the career numbers, David Lee 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.