Shang Johnson vs. Rick Mahler — Career Comparison

Looking at the career totals, Shang Johnson and Rick Mahler are fairly close on the surface numbers. Shang Johnson posted stronger numbers in WHIP (1.347 vs 1.407) and home runs allowed (0.2 per nine innings vs 0.76). Rick Mahler had the advantage in ERA (3.99 vs 4.18). 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.