Rolando Arrojo vs. Art Lopatka — Career Comparison

Looking at the career totals, Rolando Arrojo and Art Lopatka are fairly close on the surface numbers. Rolando Arrojo posted stronger numbers in ERA (4.55 vs 6.35) and WHIP (1.407 vs 1.588). Art Lopatka had the advantage in home runs allowed (0.53 per nine innings vs 1.07). By the career numbers, Rolando Arrojo 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.