Zach Jackson vs. Bobby Sprowl — Career Comparison

Zach Jackson built a career as a starting pitcher and Bobby Sprowl as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Bobby Sprowl posted stronger surface numbers — ERA 5.44 and WHIP 1.770 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Bobby Sprowl had the better of this cross-role comparison — though era context would sharpen the verdict.