John Duffie vs. Emil Levsen — Career Comparison

Looking at the career totals, John Duffie and Emil Levsen are fairly close on the surface numbers. Emil Levsen posted stronger numbers in WHIP (1.483 vs 1.655) and home runs allowed (0.38 per nine innings vs 0.93). John Duffie had the advantage in ERA (2.79 vs 4.17). By the career numbers, Emil Levsen 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.