Mike Armstrong vs. Junior Guerra — Career Comparison

Junior Guerra built a career as a starting pitcher and Mike Armstrong as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Junior Guerra led in home run suppression (HR9+ 123 vs 95), run prevention (ERA+ 124 vs 110), and skill-based run prevention (DICE+ 105 vs 97). Mike Armstrong held the edge in strikeout rate (K%+ 107 vs 101). Role difference aside, Junior Guerra holds a clear edge on every meaningful shared measure.