Don Carman vs. Jack O'Connor — Career Comparison

Don Carman 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. Don Carman led in run prevention (ERA+ 91 vs 80), strikeout rate (K%+ 95 vs 85), and walk avoidance (BB%+ 90 vs 82). Jack O'Connor held the edge in home run suppression (HR9+ 89 vs 77). Role difference aside, Don Carman holds a clear edge on every meaningful shared measure.