Zach Jackson vs. Frank MacCormack — Career Comparison

Looking at the career totals, Zach Jackson and Frank MacCormack are fairly close on the surface numbers. Frank MacCormack posted stronger numbers in ERA (5.45 vs 5.81) and home runs allowed (0.23 per nine innings vs 1.28). Zach Jackson had the advantage in WHIP (1.566 vs 2.143). By the career numbers, Frank MacCormack 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.