Larry Jackson vs. Jack O'Connor — Career Comparison

Larry Jackson built a career as a starting pitcher and Jack O'Connor as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Larry Jackson led in walk avoidance (BB%+ 120 vs 82), run prevention (ERA+ 101 vs 80), and skill-based run prevention (DICE+ 95 vs 86). Jack O'Connor held the edge in strikeout rate (K%+ 85 vs 80). Role difference aside, Larry Jackson holds a clear edge on every meaningful shared measure.