Jack Leiter vs. Juan Pizarro — Career Comparison

On the career pitching numbers, Juan Pizarro posted a stronger line than Jack Leiter. Juan Pizarro posted stronger numbers in ERA (3.43 vs 4.8) and home runs allowed (0.89 per nine innings vs 1.2). By the career numbers, Juan Pizarro 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.