MLBTradeRumors has the dirt on the one-year deal the Sox have reached with Hideki Okajima.
I'm puzzled by the signing in a lot of ways -- Hideki looked to have just lost it by the end of last year. If you look at his stats, pretty much everything good has decreased over his four years in Boston, and at age 35 there's no reason to think he'll reverse that.
The most logical reason for the signing: We know what Hideki is. We know his strengths and weaknesses, and if we can use him in ways that can bring out even a 2009 performance from him -- 3.39 ERA, 1.26 WHIP -- he'll be worth it. And it's better than trying to acquire another reliever on a multi-year deal. The Bill James projections on Fangraphs have him at a 3.68 ERA, which would be perfectly acceptable.