Jonathan Aro vs. Casey Fossum — Career Comparison

Casey Fossum 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. Casey Fossum posted stronger surface numbers — ERA 5.45 and WHIP 1.534 compared to 6.55 and 1.909 for Jonathan Aro. By the career numbers, Casey Fossum had the better of this cross-role comparison — though era context would sharpen the verdict.