Heliodoro Díaz vs. Jack Leiter — Career Comparison

On the career pitching numbers, Heliodoro Díaz posted a stronger line than Jack Leiter. Heliodoro Díaz posted stronger numbers in ERA (4.35 vs 4.8) and home runs allowed (0.41 per nine innings vs 1.2). By the career numbers, Heliodoro Díaz 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.