Jonathan Aro vs. Kid Speer — Career Comparison

Kid Speer 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. Kid Speer posted stronger surface numbers — ERA 2.83 and WHIP 1.323 compared to 6.55 and 1.909 for Jonathan Aro. By the career numbers, Kid Speer had the better of this cross-role comparison — though era context would sharpen the verdict.