Jonathan Aro vs. Frank Sullivan — Career Comparison

Frank Sullivan built a career as a starting pitcher and Jonathan Aro as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Frank Sullivan posted stronger surface numbers — ERA 3.6 and WHIP 1.323 compared to 6.55 and 1.909 for Jonathan Aro. By the career numbers, Frank Sullivan had the better of this cross-role comparison — though era context would sharpen the verdict.