Frank Allen vs. Alberto Castillo — Career Comparison

Frank Allen built a career as a starting pitcher and Alberto Castillo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Frank Allen posted stronger surface numbers — ERA 2.93 and WHIP 1.305 compared to 4.33 and 1.541 for Alberto Castillo. By the career numbers, Frank Allen had the better of this cross-role comparison — though era context would sharpen the verdict.