Lefty Clarke vs. Jack McMahan — Career Comparison

Looking at the career totals, Lefty Clarke and Jack McMahan are fairly close on the surface numbers. Jack McMahan posted stronger numbers in ERA (5.04 vs 5.4) and WHIP (1.693 vs 1.800). Lefty Clarke had the advantage in home runs allowed (0 per nine innings vs 0.96). By the career numbers, Jack McMahan 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.