Robbie Erlin vs. Sean Runyan — Career Comparison

Robbie Erlin built a career as a starting pitcher and Sean Runyan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Sean Runyan posted stronger surface numbers — ERA 3.66 and WHIP 1.484 compared to 4.87 and 1.297 for Robbie Erlin. By the career numbers, Sean Runyan had the better of this cross-role comparison — though era context would sharpen the verdict.