Zach Jackson vs. Elmer Leonard — Career Comparison

Zach Jackson built a career as a starting pitcher and Elmer Leonard as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Elmer Leonard posted stronger surface numbers — ERA 2.84 and WHIP 1.895 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Elmer Leonard had the better of this cross-role comparison — though era context would sharpen the verdict.