Adam Peterson vs. Efrain Valdez — Career Comparison

Adam Peterson built a career as a starting pitcher and Efrain Valdez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Efrain Valdez posted stronger surface numbers — ERA 2.91 and WHIP 1.588 compared to 5.46 and 1.516 for Adam Peterson. By the career numbers, Efrain Valdez had the better of this cross-role comparison — though era context would sharpen the verdict.