Adam Butler vs. Dan Dumoulin — Career Comparison

Looking at the career totals, Adam Butler and Dan Dumoulin are fairly close on the surface numbers. Dan Dumoulin posted stronger numbers in ERA (7.84 vs 10.8) and home runs allowed (0 per nine innings vs 1.8). Adam Butler had the advantage in WHIP (2.400 vs 2.613). By the career numbers, Dan Dumoulin had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.