Hayden Birdsong vs. Ryan Cook — Career Comparison

Hayden Birdsong built a career as a starting pitcher and Ryan Cook as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ryan Cook posted stronger surface numbers — ERA 3.58 and WHIP 1.272 compared to 4.77 and 1.438 for Hayden Birdsong. By the career numbers, Ryan Cook had the better of this cross-role comparison — though era context would sharpen the verdict.