Luis Castillo vs. Kevin Shackelford — Career Comparison

Luis Castillo built a career as a starting pitcher and Kevin Shackelford as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Luis Castillo posted stronger surface numbers — ERA 5.06 and WHIP 1.969 compared to 5.35 and 1.578 for Kevin Shackelford. By the career numbers, Luis Castillo had the better of this cross-role comparison — though era context would sharpen the verdict.