Grant Hartwig vs. Rodrigo Lopez — Career Comparison

Rodrigo Lopez built a career as a starting pitcher and Grant Hartwig as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Rodrigo Lopez posted stronger surface numbers — ERA 4.82 and WHIP 1.442 compared to 5.14 and 1.429 for Grant Hartwig. By the career numbers, Rodrigo Lopez had the better of this cross-role comparison — though era context would sharpen the verdict.