Dave Heaverlo vs. Jason Jennings — Career Comparison

Jason Jennings built a career as a starting pitcher and Dave Heaverlo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Dave Heaverlo led in walk avoidance (BB%+ 113 vs 82), run prevention (ERA+ 122 vs 93), and strikeout rate (K%+ 96 vs 89). Jason Jennings held the edge in home run suppression (HR9+ 114 vs 113). Role difference aside, Dave Heaverlo holds a clear edge on every meaningful shared measure.