Ray Caldwell vs. Mike Perez — Career Comparison

Ray Caldwell built a career as a starting pitcher and Mike Perez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ray Caldwell posted stronger surface numbers — ERA 3.22 and WHIP 1.261 compared to 3.56 and 1.376 for Mike Perez. By the career numbers, Ray Caldwell had the better of this cross-role comparison — though era context would sharpen the verdict.