Willie Haynes vs. Rodrigo Lopez — Career Comparison

Looking at the career totals, Willie Haynes and Rodrigo Lopez are fairly close on the surface numbers. Rodrigo Lopez posted stronger numbers in ERA (4.82 vs 6.36) and WHIP (1.442 vs 1.525). Willie Haynes had the advantage in home runs allowed (0.33 per nine innings vs 1.35). By the career numbers, Rodrigo Lopez 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.