John Costello vs. Emerson Griffin — Career Comparison

Emerson Griffin 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. Emerson Griffin posted stronger surface numbers — ERA 0 and WHIP 0.923 compared to 2.97 and 1.395 for John Costello. By the career numbers, Emerson Griffin had the better of this cross-role comparison — though era context would sharpen the verdict.