Frank Shellenback vs. Bruce Zimmermann — Career Comparison

On the career pitching numbers, Frank Shellenback posted a stronger line than Bruce Zimmermann. Frank Shellenback posted stronger numbers in ERA (3.06 vs 5.64) and home runs allowed (0.08 per nine innings vs 2.3). By the career numbers, Frank Shellenback 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.