Jonathan Aro vs. Mike Schooler — Career Comparison

On the career pitching numbers, Mike Schooler posted a stronger line than Jonathan Aro. Mike Schooler posted stronger numbers in ERA (3.49 vs 6.55) and WHIP (1.389 vs 1.909). By the career numbers, Mike Schooler 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.