Zach Jackson vs. Cotton Williams — Career Comparison

On the career pitching numbers, Cotton Williams posted a stronger line than Zach Jackson. Cotton Williams posted stronger numbers in ERA (4.62 vs 5.81) and WHIP (1.439 vs 1.566). By the career numbers, Cotton Williams 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.