John Perkovich vs. Matt Riley — Career Comparison

Matt Riley 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. Matt Riley posted stronger surface numbers — ERA 5.99 and WHIP 1.761 compared to 7.2 and 1.600 for John Perkovich. By the career numbers, Matt Riley had the better of this cross-role comparison — though era context would sharpen the verdict.