Fernando Arroyo vs. Mike Cosgrove — Career Comparison

Fernando Arroyo built a career as a starting pitcher and Mike Cosgrove as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mike Cosgrove led in home run suppression (HR9+ 216 vs 91), strikeout rate (K%+ 83 vs 58), and skill-based run prevention (DICE+ 98 vs 93). Fernando Arroyo held the edge in walk avoidance (BB%+ 132 vs 79). Role difference aside, Mike Cosgrove holds a clear edge on every meaningful shared measure.