John Perkovich vs. Ed Zmich — Career Comparison

Ed Zmich built a career as a starting pitcher and John Perkovich as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ed Zmich posted stronger surface numbers — ERA 5.18 and WHIP 1.705 compared to 7.2 and 1.600 for John Perkovich. By the career numbers, Ed Zmich had the better of this cross-role comparison — though era context would sharpen the verdict.