Paul Penson vs. Mark Portugal — Career Comparison

Looking at the career totals, Paul Penson and Mark Portugal are fairly close on the surface numbers. Mark Portugal posted stronger numbers in ERA (4.03 vs 4.5) and WHIP (1.340 vs 1.750). Paul Penson had the advantage in home runs allowed (0.56 per nine innings vs 1.03). By the career numbers, Mark Portugal 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.