Jack Harper vs. Rube Marshall — Career Comparison

Rube Marshall built a career as a starting pitcher and Jack Harper as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jack Harper posted stronger surface numbers — ERA 3.12 and WHIP 0.692 compared to 4.17 and 1.562 for Rube Marshall. By the career numbers, Jack Harper had the better of this cross-role comparison — though era context would sharpen the verdict.