Hayden Birdsong vs. Mardie Cornejo — Career Comparison

Hayden Birdsong built a career as a starting pitcher and Mardie Cornejo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mardie Cornejo posted stronger surface numbers — ERA 2.45 and WHIP 1.527 compared to 4.77 and 1.438 for Hayden Birdsong. By the career numbers, Mardie Cornejo had the better of this cross-role comparison — though era context would sharpen the verdict.