Aaron Cook vs. Thomas Hatch — Career Comparison

Aaron Cook built a career as a starting pitcher and Thomas Hatch as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Aaron Cook posted stronger surface numbers — ERA 4.6 and WHIP 1.500 compared to 5.24 and 1.621 for Thomas Hatch. By the career numbers, Aaron Cook had the better of this cross-role comparison — though era context would sharpen the verdict.