John Costello vs. Connie Rector — Career Comparison

Connie Rector built a career as a starting pitcher and John Costello as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Costello posted stronger surface numbers — ERA 2.97 and WHIP 1.395 compared to 4.66 and 1.454 for Connie Rector. By the career numbers, John Costello had the better of this cross-role comparison — though era context would sharpen the verdict.