Robbie Erlin vs. Ed Pierce — Career Comparison

Looking at the career totals, Robbie Erlin and Ed Pierce are fairly close on the surface numbers. Robbie Erlin posted stronger numbers in WHIP (1.297 vs 2.438) and home runs allowed (1.13 per nine innings vs 1.69). Ed Pierce had the advantage in ERA (3.38 vs 4.87). By the career numbers, Robbie Erlin 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.