Jake Diekman vs. Don Ferrarese — Career Comparison

Don Ferrarese built a career as a starting pitcher and Jake Diekman as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jake Diekman led in home run suppression (HR9+ 131 vs 113), run prevention (ERA+ 99 vs 91), and skill-based run prevention (DICE+ 99 vs 98). Don Ferrarese held the edge in walk avoidance (BB%+ 70 vs 68). Keeping the role difference in mind, the edge still goes to Jake Diekman.