Don Black vs. Xavier Hernandez — Career Comparison

Don Black built a career as a starting pitcher and Xavier Hernandez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Xavier Hernandez posted stronger surface numbers — ERA 3.9 and WHIP 1.376 compared to 4.35 and 1.509 for Don Black. By the career numbers, Xavier Hernandez had the better of this cross-role comparison — though era context would sharpen the verdict.