Kurt Birkins vs. Max Castillo — Career Comparison

Max Castillo built a career as a starting pitcher and Kurt Birkins as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Max Castillo posted stronger surface numbers — ERA 5.43 and WHIP 1.391 compared to 5.85 and 1.553 for Kurt Birkins. By the career numbers, Max Castillo had the better of this cross-role comparison — though era context would sharpen the verdict.