Aaron Crow vs. John Roper — Career Comparison

John Roper built a career as a starting pitcher and Aaron Crow as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Aaron Crow posted stronger surface numbers — ERA 3.43 and WHIP 1.357 compared to 5.35 and 1.511 for John Roper. By the career numbers, Aaron Crow had the better of this cross-role comparison — though era context would sharpen the verdict.