Zach Jackson vs. John Stephens — Career Comparison

Looking at the career totals, Zach Jackson and John Stephens are fairly close on the surface numbers. Zach Jackson posted stronger numbers in ERA (5.81 vs 6.09) and home runs allowed (1.28 per nine innings vs 1.8). John Stephens had the advantage in WHIP (1.415 vs 1.566). 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.