Ben Callahan vs. Shang Johnson — Career Comparison

Looking at the career totals, Ben Callahan and Shang Johnson are fairly close on the surface numbers. Shang Johnson posted stronger numbers in ERA (4.18 vs 12.54) and WHIP (1.347 vs 2.571). Ben Callahan had the advantage in home runs allowed (0 per nine innings vs 0.2). By the career numbers, Shang Johnson 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.