Manny Acosta vs. Roy Mahaffey — Career Comparison

Roy Mahaffey built a career as a starting pitcher and Manny Acosta as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Manny Acosta posted stronger surface numbers — ERA 3.99 and WHIP 1.456 compared to 5.01 and 1.546 for Roy Mahaffey. By the career numbers, Manny Acosta had the better of this cross-role comparison — though era context would sharpen the verdict.