Rollin Cook vs. Emmett O'Neill — Career Comparison

Emmett O'Neill built a career as a starting pitcher and Rollin Cook as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Emmett O'Neill posted stronger surface numbers — ERA 4.76 and WHIP 1.709 compared to 7.24 and 1.829 for Rollin Cook. By the career numbers, Emmett O'Neill had the better of this cross-role comparison — though era context would sharpen the verdict.