Tony Castillo vs. Carson Spiers — Career Comparison

Carson Spiers built a career as a starting pitcher and Tony Castillo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Tony Castillo posted stronger surface numbers — ERA 3.93 and WHIP 1.443 compared to 5.69 and 1.573 for Carson Spiers. By the career numbers, Tony Castillo had the better of this cross-role comparison — though era context would sharpen the verdict.