Jonathan Aro vs. Jay Marshall — Career Comparison

Looking at the career totals, Jonathan Aro and Jay Marshall are fairly close on the surface numbers. Jay Marshall posted stronger numbers in WHIP (1.845 vs 1.909) and home runs allowed (0.73 per nine innings vs 1.64). Jonathan Aro had the advantage in ERA (6.55 vs 7.66). By the career numbers, Jay Marshall 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.