Jonathan Aro vs. Denny O'Toole — Career Comparison

On the career pitching numbers, Denny O'Toole posted a stronger line than Jonathan Aro. Denny O'Toole posted stronger numbers in ERA (5.04 vs 6.55) and WHIP (1.747 vs 1.909). By the career numbers, Denny O'Toole 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.