Jonathan Aro vs. Kyle Martin — Career Comparison

Looking at the career totals, Jonathan Aro and Kyle Martin are fairly close on the surface numbers. Kyle Martin posted stronger numbers in ERA (3.86 vs 6.55) and WHIP (1.714 vs 1.909). Jonathan Aro had the advantage in home runs allowed (1.64 per nine innings vs 3.86). By the career numbers, Kyle Martin 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.