Casey Fien vs. John Lannan — Career Comparison

John Lannan built a career as a starting pitcher and Casey Fien as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Casey Fien led in walk avoidance (BB%+ 193 vs 97), strikeout rate (K%+ 100 vs 69), and skill-based run prevention (DICE+ 105 vs 91). John Lannan held the edge in home run suppression (HR9+ 109 vs 88). Role difference aside, Casey Fien holds a clear edge on every meaningful shared measure.