Zach Jackson vs. Ed Walsh — Career Comparison

On the career pitching numbers, Ed Walsh posted a stronger line than Zach Jackson. Ed Walsh posted stronger numbers in ERA (1.82 vs 5.81) and WHIP (1.000 vs 1.566). By the career numbers, Ed Walsh 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.