Sammy Peralta vs. Nate Robertson — Career Comparison

Nate Robertson built a career as a starting pitcher and Sammy Peralta as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Nate Robertson posted stronger surface numbers — ERA 5.01 and WHIP 1.493 compared to 5.12 and 1.774 for Sammy Peralta. By the career numbers, Nate Robertson had the better of this cross-role comparison — though era context would sharpen the verdict.