Jonathan Aro vs. Dan Marion — Career Comparison

Dan Marion 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. Dan Marion posted stronger surface numbers — ERA 3.42 and WHIP 1.317 compared to 6.55 and 1.909 for Jonathan Aro. By the career numbers, Dan Marion had the better of this cross-role comparison — though era context would sharpen the verdict.