Kyle Peterson vs. Ed Pierce — Career Comparison

Looking at the career totals, Kyle Peterson and Ed Pierce are fairly close on the surface numbers. Kyle Peterson posted stronger numbers in WHIP (1.516 vs 2.438) and home runs allowed (0.59 per nine innings vs 1.69). Ed Pierce had the advantage in ERA (3.38 vs 4.71). By the career numbers, Kyle Peterson 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.