B. J. Rosenberg vs. Bull Wagner — Career Comparison

Looking at the career totals, B. J. Rosenberg and Bull Wagner are fairly close on the surface numbers. Bull Wagner had the edge in home runs allowed (0.54 per nine innings vs 1.43). By the career numbers, Bull Wagner 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.