Willie Collazo vs. Casey Kelly — Career Comparison

Casey Kelly built a career as a starting pitcher and Willie Collazo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Casey Kelly posted stronger surface numbers — ERA 5.34 and WHIP 1.662 compared to 6.35 and 2.294 for Willie Collazo. By the career numbers, Casey Kelly had the better of this cross-role comparison — though era context would sharpen the verdict.