Jake Arrieta vs. Dan Jennings — Career Comparison

Jake Arrieta built a career as a starting pitcher and Dan Jennings as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Dan Jennings led in home run suppression (HR9+ 259 vs 95), run prevention (ERA+ 161 vs 87), and skill-based run prevention (DICE+ 104 vs 90). Jake Arrieta held the edge in strikeout rate (K%+ 91 vs 82). Role difference aside, Dan Jennings holds a clear edge on every meaningful shared measure.