Rudy Arias vs. Willis Roberts — Career Comparison

Looking at the career totals, Rudy Arias and Willis Roberts are fairly close on the surface numbers. Willis Roberts posted stronger numbers in WHIP (1.521 vs 1.727) and home runs allowed (0.94 per nine innings vs 1.43). Rudy Arias had the advantage in ERA (4.09 vs 4.64). By the career numbers, Willis Roberts 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.