Melvin Mercedes vs. George O'Donnell — Career Comparison

George O'Donnell built a career as a starting pitcher and Melvin Mercedes as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Melvin Mercedes posted stronger surface numbers — ERA 0 and WHIP 0.000 compared to 4.53 and 1.443 for George O'Donnell. By the career numbers, Melvin Mercedes had the better of this cross-role comparison — though era context would sharpen the verdict.