Nick Martinez vs. Jim Peterson — Career Comparison

Nick Martinez built a career as a starting pitcher and Jim Peterson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Nick Martinez posted stronger surface numbers — ERA 4.16 and WHIP 1.309 compared to 5.27 and 1.665 for Jim Peterson. By the career numbers, Nick Martinez had the better of this cross-role comparison — though era context would sharpen the verdict.