Michael Kopech vs. Frank Stewart — Career Comparison

Michael Kopech built a career as a starting pitcher and Frank Stewart as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Frank Stewart posted stronger surface numbers — ERA 2.45 and WHIP 1.091 compared to 4.14 and 1.333 for Michael Kopech. By the career numbers, Frank Stewart had the better of this cross-role comparison — though era context would sharpen the verdict.