Rodrigo Lopez vs. Ed Pierce — Career Comparison

Looking at the career totals, Rodrigo Lopez and Ed Pierce are fairly close on the surface numbers. Rodrigo Lopez posted stronger numbers in WHIP (1.442 vs 2.438) and home runs allowed (1.35 per nine innings vs 1.69). Ed Pierce had the advantage in ERA (3.38 vs 4.82). 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.