Joe Nathan, RP, Rangers
Transaction: Left Minnesota to sign free-agent deal with Texas
Noteworthy stats: Has 6-1 record, 1.08 ERA, 0.84 WHIP and 10.2 K/9 in career (83 innings) against Angels, A's and Mariners
Analysis: Nathan posted an ERA above 4.00 in 2011 for the first time since 2000. However, his ERA was inflated as he struggled early coming off Tommy John surgery. Once he returned from a disabled-list stint in late June, Nathan looked more like his former dominant self. He went 11 for 12 in save chances in his final 31 outings, posting a 3.38 ERA, .193 opponents' batting average and .218 BABIP during that span. He now joins a top contender, so the save chances should be plentiful. A major concern is how Nathan, a fly-ball pitcher, will hold up at homer-friendly Ballpark in Arlington. However, Nathan has allowed just one homer in 13 career outings (13 2/3 innings) at the Rangers home ballpark, while posting a 1.98 ERA, 1.39 WHIP and 14.5 strikeouts per nine innings. Nathan seems at home in the AL West and could get back to being an elite Fantasy relief pitcher in 2012.