Aaron Laffey vs. William Sullivan — Career Comparison

Aaron Laffey built a career as a starting pitcher and William Sullivan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Aaron Laffey posted stronger surface numbers — ERA 4.44 and WHIP 1.535 compared to 4.5 and 1.667 for William Sullivan. By the career numbers, Aaron Laffey had the better of this cross-role comparison — though era context would sharpen the verdict.