Zach Jackson vs. Mike Walker — Career Comparison

Zach Jackson built a career as a starting pitcher and Mike Walker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mike Walker posted stronger surface numbers — ERA 5.09 and WHIP 1.770 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Mike Walker had the better of this cross-role comparison — though era context would sharpen the verdict.