Jack Leiter vs. Rollie Naylor — Career Comparison

Looking at the career totals, Jack Leiter and Rollie Naylor are fairly close on the surface numbers. Rollie Naylor posted stronger numbers in ERA (3.93 vs 4.8) and home runs allowed (0.3 per nine innings vs 1.2). Jack Leiter had the advantage in WHIP (1.361 vs 1.503). By the career numbers, Rollie Naylor 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.