Bill Greif vs. Jack O'Connor — Career Comparison

Bill Greif 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. Bill Greif led in walk avoidance (BB%+ 102 vs 82), strikeout rate (K%+ 104 vs 85), and skill-based run prevention (DICE+ 92 vs 86). Jack O'Connor held the edge in home run suppression (HR9+ 89 vs 80). Role difference aside, Bill Greif holds a clear edge on every meaningful shared measure.