Steve Arlin vs. Bob Macdonald — Career Comparison

Steve Arlin built a career as a starting pitcher and Bob Macdonald as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Bob Macdonald led in walk avoidance (BB%+ 100 vs 79), run prevention (ERA+ 101 vs 81), and skill-based run prevention (DICE+ 94 vs 92). Steve Arlin held the edge in home run suppression (HR9+ 131 vs 90). Role difference aside, Bob Macdonald holds a clear edge on every meaningful shared measure.