John Brown vs. Michael Petersen — Career Comparison

John Brown built a career as a starting pitcher and Michael Petersen as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Brown posted stronger surface numbers — ERA 2.29 and WHIP 1.236 compared to 5.02 and 1.593 for Michael Petersen. By the career numbers, John Brown had the better of this cross-role comparison — though era context would sharpen the verdict.