Justin Berg vs. Yilber Díaz — Career Comparison

Yilber Díaz built a career as a starting pitcher and Justin Berg as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Justin Berg posted stronger surface numbers — ERA 4.08 and WHIP 1.484 compared to 4.31 and 1.468 for Yilber Díaz. By the career numbers, Justin Berg had the better of this cross-role comparison — though era context would sharpen the verdict.