John Fitzgerald vs. George Mack — Career Comparison

Looking at the career totals, John Fitzgerald and George Mack are fairly close on the surface numbers. John Fitzgerald posted stronger numbers in ERA (3 vs 7.19) and WHIP (0.667 vs 1.890). George Mack had the advantage in home runs allowed (1.05 per nine innings vs 3). By the career numbers, John Fitzgerald 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.