Gio Gonzalez vs. Jack O'Connor — Career Comparison

Gio Gonzalez 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. Gio Gonzalez led in home run suppression (HR9+ 128 vs 89), run prevention (ERA+ 113 vs 80), and strikeout rate (K%+ 114 vs 85). Jack O'Connor held the edge in walk avoidance (BB%+ 82 vs 81). Role difference aside, Gio Gonzalez holds a clear edge on every meaningful shared measure.