Mark Prior vs. Mauricio Robles — Career Comparison

Mark Prior built a career as a starting pitcher and Mauricio Robles as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mauricio Robles posted stronger surface numbers — ERA 1.93 and WHIP 2.143 compared to 3.51 and 1.240 for Mark Prior. By the career numbers, Mauricio Robles had the better of this cross-role comparison — though era context would sharpen the verdict.