Jon Duplantier vs. Jay Marshall — Career Comparison

Jon Duplantier built a career as a starting pitcher and Jay Marshall as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jon Duplantier posted stronger surface numbers — ERA 6.7 and WHIP 1.711 compared to 7.66 and 1.845 for Jay Marshall. By the career numbers, Jon Duplantier had the better of this cross-role comparison — though era context would sharpen the verdict.