The signing comes as a bit of a surprise, considering how full the Dodger bullpen seems even without counting on someone like Ronald Belisario. Los Angeles already has Javy Guerra, Kenley Jansen, Matt Guerrier, Josh Lindblom, Mike MacDougal, Blake Hawksworth (who is recovering from arthroscopic surgery) and Scott Elbert, as well as some promising arms in the minors.
The 31-year-old Coffey is better than the worst of that bunch, averaging 6.9 strikeouts per nine innings last year and 6.7 for his career. Opponents last year had a .305 on-base percentage and .351 slugging percentage against him. He stranded 29 of 36 inherited runners in 2011 (81 percent), a rate that was far better than he normally has. But he’s not so much better that I would see this as anything more as a move to add depth to the relief corps.
Update: Steve Slowinski of Fangraphs calls this signing “excellent,” with the important caveat that Coffey has wide platoon splits favoring him against right-handed batters. Mike Petriello of Mike Scioscia’s Tragic Illness also approves.