Paul Penson vs. Billy Pierce — Career Comparison

Looking at the career totals, Paul Penson and Billy Pierce are fairly close on the surface numbers. Billy Pierce posted stronger numbers in ERA (3.27 vs 4.5) and WHIP (1.271 vs 1.750). Paul Penson had the advantage in home runs allowed (0.56 per nine innings vs 0.77). By the career numbers, Billy Pierce 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.