Zach Jackson vs. Tony Zych — Career Comparison

Zach Jackson built a career as a starting pitcher and Tony Zych as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Tony Zych posted stronger surface numbers — ERA 2.72 and WHIP 1.321 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Tony Zych had the better of this cross-role comparison — though era context would sharpen the verdict.