Wily Peralta vs. Mark Schaeffer — Career Comparison

Wily Peralta built a career as a starting pitcher and Mark Schaeffer as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Wily Peralta posted stronger surface numbers — ERA 4.29 and WHIP 1.458 compared to 4.61 and 2.000 for Mark Schaeffer. By the career numbers, Wily Peralta had the better of this cross-role comparison — though era context would sharpen the verdict.