Jack Armstrong vs. David Hernandez — Career Comparison

Jack Armstrong 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. Jack Armstrong led in home run suppression (HR9+ 85 vs 74), run prevention (ERA+ 89 vs 83), and skill-based run prevention (DICE+ 89 vs 89). David Hernandez held the edge in strikeout rate (K%+ 105 vs 103). Keeping the role difference in mind, the edge still goes to Jack Armstrong.