Gerardo Concepcion vs. Mike Regan — Career Comparison

Mike Regan 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. Mike Regan posted stronger surface numbers — ERA 2.84 and WHIP 1.260 compared to 3.86 and 1.286 for Gerardo Concepcion. By the career numbers, Mike Regan had the better of this cross-role comparison — though era context would sharpen the verdict.