After missing the entire 2010 season, Nathan came back in a setup role in 2011, but he still didn't look like himself. According to FanGraphs, he had the lowest average fastball velocity in his career, and relied more on his curveball than he had in the past. At 37 years old, he may not regain that lost velocity. Still, he remains a proven closer, he pitches for one of the best teams in the majors, and 19 closers are having their names called (or clicked on or placed on a draft board or whatever) before Nathan. For a guy with his track record, you have to love that price.