Yilber Díaz vs. Kris Foster — Career Comparison

Yilber Díaz built a career as a starting pitcher and Kris Foster as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Kris Foster posted stronger surface numbers — ERA 2.7 and WHIP 1.700 compared to 4.31 and 1.468 for Yilber Díaz. By the career numbers, Kris Foster had the better of this cross-role comparison — though era context would sharpen the verdict.