Luis Ayala vs. John Patterson — Career Comparison

John Patterson built a career as a starting pitcher and Luis Ayala as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Luis Ayala posted stronger surface numbers — ERA 3.34 and WHIP 1.342 compared to 4.32 and 1.400 for John Patterson. By the career numbers, Luis Ayala had the better of this cross-role comparison — though era context would sharpen the verdict.