Michael Kopech vs. Dwight Siebler — Career Comparison

Michael Kopech built a career as a starting pitcher and Dwight Siebler as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Dwight Siebler posted stronger surface numbers — ERA 3.45 and WHIP 1.227 compared to 4.14 and 1.333 for Michael Kopech. By the career numbers, Dwight Siebler had the better of this cross-role comparison — though era context would sharpen the verdict.