Michael Kopech vs. Phil Slattery — Career Comparison

Michael Kopech built a career as a starting pitcher and Phil Slattery as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Phil Slattery posted stronger surface numbers — ERA 0 and WHIP 0.750 compared to 4.14 and 1.333 for Michael Kopech. By the career numbers, Phil Slattery had the better of this cross-role comparison — though era context would sharpen the verdict.