John Frill vs. George Mack — Career Comparison

On the career pitching numbers, John Frill posted a stronger line than George Mack. John Frill posted stronger numbers in ERA (5.85 vs 7.19) and WHIP (1.433 vs 1.890). By the career numbers, John Frill 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.