Jeremy Affeldt vs. Mike Walters — Career Comparison

Looking at the career totals, Jeremy Affeldt and Mike Walters are fairly close on the surface numbers. Mike Walters had the edge in home runs allowed (0.51 per nine innings vs 0.74). By the career numbers, Mike Walters 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.