Zach McClellan vs. John O'Donoghue — Career Comparison

John O'Donoghue built a career as a starting pitcher and Zach McClellan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John O'Donoghue posted stronger surface numbers — ERA 4.07 and WHIP 1.421 compared to 5.79 and 1.929 for Zach McClellan. By the career numbers, John O'Donoghue had the better of this cross-role comparison — though era context would sharpen the verdict.