Mort Cooper vs. Bobby Herrera — Career Comparison

Mort Cooper built a career as a starting pitcher and Bobby Herrera as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mort Cooper posted stronger surface numbers — ERA 2.97 and WHIP 1.215 compared to 27 and 4.286 for Bobby Herrera. By the career numbers, Mort Cooper had the better of this cross-role comparison — though era context would sharpen the verdict.