Jake Arrieta vs. Spencer Bivens — Career Comparison

Jake Arrieta built a career as a starting pitcher and Spencer Bivens as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Spencer Bivens led in walk avoidance (BB%+ 146 vs 89), run prevention (ERA+ 115 vs 87), and home run suppression (HR9+ 110 vs 95). Jake Arrieta held the edge in strikeout rate (K%+ 91 vs 77). Role difference aside, Spencer Bivens holds a clear edge on every meaningful shared measure.