David Holmberg vs. David Robertson — Career Comparison

David Holmberg built a career as a starting pitcher and David Robertson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. David Robertson posted stronger surface numbers — ERA 2.93 and WHIP 1.204 compared to 5.49 and 1.713 for David Holmberg. By the career numbers, David Robertson had the better of this cross-role comparison — though era context would sharpen the verdict.