Unknown Allen vs. Zach Jackson — Career Comparison

Looking at the career totals, Unknown Allen and Zach Jackson are fairly close on the surface numbers. Zach Jackson posted stronger numbers in ERA (5.81 vs 40.5) and WHIP (1.566 vs 7.500). Unknown Allen had the advantage in home runs allowed (0 per nine innings vs 1.28). By the career numbers, Zach Jackson 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.