Jonathan Aro vs. Ismael Valdez — Career Comparison

Ismael Valdez built a career as a starting pitcher and Jonathan Aro as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ismael Valdez posted stronger surface numbers — ERA 4.09 and WHIP 1.332 compared to 6.55 and 1.909 for Jonathan Aro. By the career numbers, Ismael Valdez had the better of this cross-role comparison — though era context would sharpen the verdict.