John Dettmer vs. Mike Willis — Career Comparison

John Dettmer built a career as a starting pitcher and Mike Willis as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Dettmer posted stronger surface numbers — ERA 4.47 and WHIP 1.620 compared to 4.59 and 1.524 for Mike Willis. By the career numbers, John Dettmer had the better of this cross-role comparison — though era context would sharpen the verdict.