John Lannan vs. David Robertson — Career Comparison

John Lannan built a career as a starting pitcher and David Robertson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. David Robertson led in strikeout rate (K%+ 136 vs 69), skill-based run prevention (DICE+ 119 vs 91), and run prevention (ERA+ 128 vs 103). John Lannan held the edge in walk avoidance (BB%+ 97 vs 84). Role difference aside, David Robertson holds a clear edge on every meaningful shared measure.