Jake Diekman vs. Roy Witherup — Career Comparison

Roy Witherup built a career as a starting pitcher and Jake Diekman as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jake Diekman posted stronger surface numbers — ERA 3.91 and WHIP 1.431 compared to 4.44 and 1.454 for Roy Witherup. By the career numbers, Jake Diekman had the better of this cross-role comparison — though era context would sharpen the verdict.