Sonny Siebert vs. Mike Willis — Career Comparison

Sonny Siebert built a career as a starting pitcher and Mike Willis as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Sonny Siebert led in home run suppression (HR9+ 98 vs 61), strikeout rate (K%+ 103 vs 87), and run prevention (ERA+ 96 vs 81). Role difference aside, Sonny Siebert holds a clear edge on every meaningful shared measure.