Gerardo Concepcion vs. Jack Killilay — Career Comparison

Jack Killilay built a career as a starting pitcher and Gerardo Concepcion as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jack Killilay posted stronger surface numbers — ERA 3.54 and WHIP 1.656 compared to 3.86 and 1.286 for Gerardo Concepcion. By the career numbers, Jack Killilay had the better of this cross-role comparison — though era context would sharpen the verdict.