Jim Acker vs. Art Mahaffey — Career Comparison

Art Mahaffey built a career as a starting pitcher and Jim Acker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Their run-prevention marks were nearly identical — ERA+ of 92 for Jim Acker and 90 for Art Mahaffey, with skill-based marks of DICE+ 86 and 90 respectively. Role difference aside, the slight lean goes to Jim Acker — but these two were remarkably close on the shared metrics.