Ed Pierce vs. Roberto Rivera — Career Comparison

Ed Pierce built a career as a starting pitcher and Roberto Rivera as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ed Pierce posted stronger surface numbers — ERA 3.38 and WHIP 2.438 compared to 4.5 and 1.583 for Roberto Rivera. By the career numbers, Ed Pierce had the better of this cross-role comparison — though era context would sharpen the verdict.