R. J. Alaniz vs. Jonathan Aro — Career Comparison

Looking at the career totals, R. J. Alaniz and Jonathan Aro are fairly close on the surface numbers. Jonathan Aro posted stronger numbers in ERA (6.55 vs 8.35) and home runs allowed (1.64 per nine innings vs 1.96). R. J. Alaniz had the advantage in WHIP (1.636 vs 1.909). By the career numbers, Jonathan Aro 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.