Alberto Castillo vs. Heliodoro Díaz — Career Comparison

Heliodoro Díaz 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. Alberto Castillo posted stronger surface numbers — ERA 4.33 and WHIP 1.541 compared to 4.35 and 1.405 for Heliodoro Díaz. By the career numbers, Alberto Castillo had the better of this cross-role comparison — though era context would sharpen the verdict.