Guillermo Moscoso vs. Jim Peterson — Career Comparison

Guillermo Moscoso 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. Guillermo Moscoso posted stronger surface numbers — ERA 4.28 and WHIP 1.329 compared to 5.27 and 1.665 for Jim Peterson. By the career numbers, Guillermo Moscoso had the better of this cross-role comparison — though era context would sharpen the verdict.