Dan Dumoulin vs. Julián Pérez — Career Comparison

Julián Pérez built a career as a starting pitcher and Dan Dumoulin as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Julián Pérez posted stronger surface numbers — ERA 2.54 and WHIP 1.235 compared to 7.84 and 2.613 for Dan Dumoulin. By the career numbers, Julián Pérez had the better of this cross-role comparison — though era context would sharpen the verdict.