Henry Mathewson vs. Arnie Portocarrero — Career Comparison

Looking at the career totals, Henry Mathewson and Arnie Portocarrero are fairly close on the surface numbers. Arnie Portocarrero posted stronger numbers in ERA (4.32 vs 4.91) and WHIP (1.354 vs 2.000). Henry Mathewson had the advantage in home runs allowed (0 per nine innings vs 0.9). By the career numbers, Arnie Portocarrero 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.