Grant Jackson vs. Zach Jackson — Career Comparison

On the career pitching numbers, Zach Jackson posted a stronger line than Grant Jackson. Zach Jackson posted stronger numbers in ERA (2.86 vs 3.46) and home runs allowed (0.27 per nine innings vs 0.72). 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.