Paul Penson vs. Lefty Phillips — Career Comparison

Looking at the career totals, Paul Penson and Lefty Phillips are fairly close on the surface numbers. Paul Penson posted stronger numbers in ERA (4.5 vs 8.31) and WHIP (1.750 vs 2.885). Lefty Phillips had the advantage in home runs allowed (0 per nine innings vs 0.56). By the career numbers, Paul Penson 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.