Jim Peterson vs. William Warrick — Career Comparison

William Warrick 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. William Warrick posted stronger surface numbers — ERA 4.5 and WHIP 1.250 compared to 5.27 and 1.665 for Jim Peterson. By the career numbers, William Warrick had the better of this cross-role comparison — though era context would sharpen the verdict.