Boof Bonser vs. Jim Colzie — Career Comparison

Looking at the career totals, Boof Bonser and Jim Colzie are fairly close on the surface numbers. Boof Bonser posted stronger numbers in ERA (5.18 vs 5.43) and WHIP (1.471 vs 1.764). Jim Colzie had the advantage in home runs allowed (0.27 per nine innings vs 1.36). By the career numbers, Boof Bonser 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.