Jack Leiter vs. Jerry Upp — Career Comparison

Looking at the career totals, Jack Leiter and Jerry Upp are fairly close on the surface numbers. Jerry Upp posted stronger numbers in ERA (1.69 vs 4.8) and home runs allowed (0 per nine innings vs 1.2). Jack Leiter had the advantage in WHIP (1.361 vs 1.425). By the career numbers, Jerry Upp 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.