Aaron Looper vs. Marc Rzepczynski — Career Comparison

Looking at the career totals, Aaron Looper and Marc Rzepczynski are fairly close on the surface numbers. Marc Rzepczynski posted stronger numbers in ERA (3.89 vs 5.14) and home runs allowed (0.75 per nine innings vs 1.29). Aaron Looper had the advantage in WHIP (1.286 vs 1.502). By the career numbers, Marc Rzepczynski 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.