Zach Jackson vs. Jeff Sparks — Career Comparison

Zach Jackson built a career as a starting pitcher and Jeff Sparks as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jeff Sparks posted stronger surface numbers — ERA 4.15 and WHIP 1.681 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Jeff Sparks had the better of this cross-role comparison — though era context would sharpen the verdict.