Alberto Arias vs. Oliver Perez — Career Comparison

Oliver Perez built a career as a starting pitcher and Alberto Arias as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Alberto Arias posted stronger surface numbers — ERA 3.74 and WHIP 1.580 compared to 4.37 and 1.459 for Oliver Perez. By the career numbers, Alberto Arias had the better of this cross-role comparison — though era context would sharpen the verdict.