Jonathan Aro vs. Otto Rettig — Career Comparison

Otto Rettig 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. Otto Rettig posted stronger surface numbers — ERA 4.91 and WHIP 1.636 compared to 6.55 and 1.909 for Jonathan Aro. By the career numbers, Otto Rettig had the better of this cross-role comparison — though era context would sharpen the verdict.