Zach Jackson vs. Chia-Jen Lo — Career Comparison

Zach Jackson built a career as a starting pitcher and Chia-Jen Lo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Chia-Jen Lo posted stronger surface numbers — ERA 4.19 and WHIP 1.397 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Chia-Jen Lo had the better of this cross-role comparison — though era context would sharpen the verdict.