Fernando Arroyo vs. Diomedes Olivo — Career Comparison

Fernando Arroyo built a career as a starting pitcher and Diomedes Olivo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Diomedes Olivo posted stronger surface numbers — ERA 3.1 and WHIP 1.491 compared to 4.44 and 1.423 for Fernando Arroyo. By the career numbers, Diomedes Olivo had the better of this cross-role comparison — though era context would sharpen the verdict.