Mark Ettles vs. Oliver Perez — Career Comparison

Oliver Perez built a career as a starting pitcher and Mark Ettles as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Oliver Perez posted stronger surface numbers — ERA 4.37 and WHIP 1.459 compared to 6.5 and 1.556 for Mark Ettles. By the career numbers, Oliver Perez had the better of this cross-role comparison — though era context would sharpen the verdict.