Greg Mullins vs. John O'Donoghue — Career Comparison

John O'Donoghue built a career as a starting pitcher and Greg Mullins as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Greg Mullins posted stronger surface numbers — ERA 0 and WHIP 1.000 compared to 4.07 and 1.421 for John O'Donoghue. By the career numbers, Greg Mullins had the better of this cross-role comparison — though era context would sharpen the verdict.