Spencer Arrighetti vs. Keith Atherton — Career Comparison

Spencer Arrighetti built a career as a starting pitcher and Keith Atherton as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Keith Atherton posted stronger surface numbers — ERA 3.99 and WHIP 1.407 compared to 4.69 and 1.409 for Spencer Arrighetti. By the career numbers, Keith Atherton had the better of this cross-role comparison — though era context would sharpen the verdict.