Jack Aker vs. Steven Matz — Career Comparison

Steven Matz built a career as a starting pitcher and Jack Aker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Steven Matz led in home run suppression (HR9+ 110 vs 76), run prevention (ERA+ 111 vs 89), and skill-based run prevention (DICE+ 108 vs 88). Role difference aside, Steven Matz holds a clear edge on every meaningful shared measure.