Willie Collazo vs. Hisashi Iwakuma — Career Comparison

Hisashi Iwakuma 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. Hisashi Iwakuma posted stronger surface numbers — ERA 3.42 and WHIP 1.158 compared to 6.35 and 2.294 for Willie Collazo. By the career numbers, Hisashi Iwakuma had the better of this cross-role comparison — though era context would sharpen the verdict.