Joe Nathan is one of the best closers in MLB history. I know, that probably surprises you. He's converted 90% of save opportunities over his 12 year career, only blowing 32 saves. His career ERA is 2.85, WHIP is 1.10, and he has 50 W to go along with his 291 SV (currently ranked 25th all-time). As a typical closer, he strikes out better than a batter per inning (826 K:784 IP). His career WAR is 22, which is stellar given he's only a 1-inning reliever. His winning percentage is fantastic (65.8%), which would rank him 18th all-time if he had 100+ decisions. He's a 5 time All-Star. Hell, he even hit 2 homeruns back in his early days as a starting pitcher with the San Franciso Giants. In fact, he didn't become a closer until his first season in Minnesota. Also, consider he's missed significant time (full seasons) due to arm injuries. This man is a beast! That's why I begged my beloved Phillies to sign him this offseason, but instead they vastly overpaid for Papelbon and the Rangers got the deal of the offseason with Nathan.