Willie Haynes vs. Sean Poppen — Career Comparison

Willie Haynes built a career as a starting pitcher and Sean Poppen as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Sean Poppen posted stronger surface numbers — ERA 5.08 and WHIP 1.663 compared to 6.36 and 1.525 for Willie Haynes. By the career numbers, Sean Poppen had the better of this cross-role comparison — though era context would sharpen the verdict.