Gerardo Concepcion vs. Bill Kalfass — Career Comparison

Bill Kalfass 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. Bill Kalfass posted stronger surface numbers — ERA 3 and WHIP 1.667 compared to 3.86 and 1.286 for Gerardo Concepcion. By the career numbers, Bill Kalfass had the better of this cross-role comparison — though era context would sharpen the verdict.