Brad Penny vs. John Perkovich — Career Comparison

Brad Penny 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. Brad Penny posted stronger surface numbers — ERA 4.29 and WHIP 1.396 compared to 7.2 and 1.600 for John Perkovich. By the career numbers, Brad Penny had the better of this cross-role comparison — though era context would sharpen the verdict.