David Hernandez vs. Jon Lieber — Career Comparison

Jon Lieber built a career as a starting pitcher and David Hernandez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jon Lieber led in walk avoidance (BB%+ 177 vs 92), run prevention (ERA+ 104 vs 83), and skill-based run prevention (DICE+ 103 vs 89). David Hernandez held the edge in strikeout rate (K%+ 105 vs 97). Role difference aside, Jon Lieber holds a clear edge on every meaningful shared measure.