James Marvel vs. Zac Rosscup — Career Comparison

James Marvel built a career as a starting pitcher and Zac Rosscup as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Zac Rosscup posted stronger surface numbers — ERA 5.09 and WHIP 1.673 compared to 8.31 and 1.788 for James Marvel. By the career numbers, Zac Rosscup had the better of this cross-role comparison — though era context would sharpen the verdict.