Javier Assad vs. Jack O'Connor — Career Comparison

Javier Assad 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. Javier Assad led in run prevention (ERA+ 131 vs 80), home run suppression (HR9+ 111 vs 89), and skill-based run prevention (DICE+ 98 vs 86). Role difference aside, Javier Assad holds a clear edge on every meaningful shared measure.