Robin Roberts vs. Caleb Thielbar — Career Comparison

Robin Roberts built a career as a starting pitcher and Caleb Thielbar as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Caleb Thielbar led in run prevention (ERA+ 137 vs 88), home run suppression (HR9+ 119 vs 76), and skill-based run prevention (DICE+ 115 vs 93). Robin Roberts held the edge in walk avoidance (BB%+ 166 vs 118). Role difference aside, Caleb Thielbar holds a clear edge on every meaningful shared measure.