Jack Leiter vs. Bill Parsons — Career Comparison

On the career pitching numbers, Bill Parsons posted a stronger line than Jack Leiter. Bill Parsons posted stronger numbers in ERA (3.89 vs 4.8) and home runs allowed (0.9 per nine innings vs 1.2). By the career numbers, Bill Parsons 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.