A. J. Griffin vs. Jack O'Connor — Career Comparison

A. J. Griffin 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. A. J. Griffin led in strikeout rate (K%+ 108 vs 85), walk avoidance (BB%+ 99 vs 82), and run prevention (ERA+ 97 vs 80). Jack O'Connor held the edge in home run suppression (HR9+ 89 vs 64). Keeping the role difference in mind, the edge still goes to A. J. Griffin.