Jack Flaherty vs. John Leister — Career Comparison

On the career pitching numbers, Jack Flaherty posted a stronger line than John Leister. Jack Flaherty posted stronger numbers in ERA (3.8 vs 8.5) and WHIP (1.208 vs 2.028). By the career numbers, Jack Flaherty 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.