Speed Haywood vs. Jack Leiter — Career Comparison

Looking at the career totals, Speed Haywood and Jack Leiter are fairly close on the surface numbers. Jack Leiter posted stronger numbers in ERA (4.8 vs 9.32) and WHIP (1.361 vs 2.125). Speed Haywood had the advantage in home runs allowed (0.32 per nine innings vs 1.2). By the career numbers, Jack Leiter 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.