John Costello vs. Phil Hughes — Career Comparison

Phil Hughes built a career as a starting pitcher and John Costello as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Phil Hughes led in walk avoidance (BB%+ 204 vs 91), skill-based run prevention (DICE+ 103 vs 99), and strikeout rate (K%+ 102 vs 99). John Costello held the edge in run prevention (ERA+ 135 vs 97). Keeping the role difference in mind, the edge still goes to Phil Hughes.