Zach McAllister vs. Lefty Willis — Career Comparison

Looking at the career totals, Zach McAllister and Lefty Willis are fairly close on the surface numbers. Lefty Willis posted stronger numbers in ERA (3.92 vs 4.15) and home runs allowed (0.56 per nine innings vs 1.07). Zach McAllister had the advantage in WHIP (1.412 vs 1.508). By the career numbers, Lefty Willis 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.