Porfi Altamirano vs. Mason Thompson — Career Comparison

Looking at the career totals, Porfi Altamirano and Mason Thompson are fairly close on the surface numbers. Porfi Altamirano posted stronger numbers in ERA (4.03 vs 5.21) and WHIP (1.342 vs 1.667). Mason Thompson had the advantage in home runs allowed (0.87 per nine innings vs 1.28). By the career numbers, Porfi Altamirano 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.