Jack Leiter vs. Jonathon Niese — Career Comparison

On the career pitching numbers, Jonathon Niese posted a stronger line than Jack Leiter. Jonathon Niese posted stronger numbers in ERA (4.07 vs 4.8) and home runs allowed (0.99 per nine innings vs 1.2). By the career numbers, Jonathon Niese 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.