Mace Brown vs. Zack Kelly — Career Comparison

Looking at the career totals, Mace Brown and Zack Kelly are fairly close on the surface numbers. Mace Brown posted stronger numbers in ERA (3.46 vs 4.15) and home runs allowed (0.37 per nine innings vs 1.17). Zack Kelly had the advantage in WHIP (1.348 vs 1.407). By the career numbers, Mace Brown 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.