Caleb Thielbar vs. Frank Viola — Career Comparison

Frank Viola 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 home run suppression (HR9+ 119 vs 73), run prevention (ERA+ 137 vs 94), and skill-based run prevention (DICE+ 115 vs 95). Frank Viola held the edge in strikeout rate (K%+ 114 vs 104). Role difference aside, Caleb Thielbar holds a clear edge on every meaningful shared measure.