Jim Peterson vs. Jake Thielman — Career Comparison

Jake Thielman 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. Jake Thielman posted stronger surface numbers — ERA 3.16 and WHIP 1.241 compared to 5.27 and 1.665 for Jim Peterson. By the career numbers, Jake Thielman had the better of this cross-role comparison — though era context would sharpen the verdict.