Keith Butler vs. Bruce Sutter — Career Comparison

Looking at the career totals, Keith Butler and Bruce Sutter are fairly close on the surface numbers. Bruce Sutter posted stronger numbers in ERA (2.83 vs 6.14) and WHIP (1.220 vs 1.409). Keith Butler had the advantage in home runs allowed (0 per nine innings vs 0.67). By the career numbers, Bruce Sutter 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.