Zach Jackson vs. Tony Santillan — Career Comparison

Zach Jackson built a career as a starting pitcher and Tony Santillan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Tony Santillan posted stronger surface numbers — ERA 3.02 and WHIP 1.253 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Tony Santillan had the better of this cross-role comparison — though era context would sharpen the verdict.