Mike Duvall vs. David Peterson — Career Comparison

David Peterson built a career as a starting pitcher and Mike Duvall as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. David Peterson posted stronger surface numbers — ERA 4.12 and WHIP 1.376 compared to 4.76 and 1.863 for Mike Duvall. By the career numbers, David Peterson had the better of this cross-role comparison — though era context would sharpen the verdict.