Zach Jackson vs. Kyle Zimmer — Career Comparison

Zach Jackson built a career as a starting pitcher and Kyle Zimmer as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Kyle Zimmer posted stronger surface numbers — ERA 5.19 and WHIP 1.552 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Kyle Zimmer had the better of this cross-role comparison — though era context would sharpen the verdict.