Rodrigo Lopez vs. Bill Zepp — Career Comparison

Looking at the career totals, Rodrigo Lopez and Bill Zepp are fairly close on the surface numbers. Bill Zepp posted stronger numbers in ERA (3.64 vs 4.82) and home runs allowed (0.57 per nine innings vs 1.35). Rodrigo Lopez had the advantage in WHIP (1.442 vs 1.495). By the career numbers, Bill Zepp 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.