Rheal Cormier vs. Yilber Díaz — Career Comparison

Yilber Díaz built a career as a starting pitcher and Rheal Cormier as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Rheal Cormier posted stronger surface numbers — ERA 4.03 and WHIP 1.311 compared to 4.31 and 1.468 for Yilber Díaz. By the career numbers, Rheal Cormier had the better of this cross-role comparison — though era context would sharpen the verdict.