Ed Pierce vs. Charlie Robertson — Career Comparison

Looking at the career totals, Ed Pierce and Charlie Robertson are fairly close on the surface numbers. Charlie Robertson posted stronger numbers in WHIP (1.518 vs 2.438) and home runs allowed (0.34 per nine innings vs 1.69). Ed Pierce had the advantage in ERA (3.38 vs 4.44). By the career numbers, Charlie Robertson 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.