Fan Graphs and Baseball Prospectus analyzed Boston's signing of Koji Uehara. Jack Moore wrote the piece for Fan Graphs (Jack Moore; Fan Graphs) and I got to do the piece for Baseball Prospectus. (Matthew Kory; Baseball Prospectus) My piece is behind BP's paywall but in a nutshell: if he stays healthy, good deal.
An article you can read if you're not a BP subscriber is Zachary Levine's piece on Winter Meetings winners and losers. The Red Sox aren't mentioned specifically but the Yankees are in the losers column so it's obviously implied. (Zachary Levine; Baseball Prospectus)
The fine folks at Sox Prospects give us the rundown on the Rule 5 Draft and its impact on the Red Sox. (Chris Hatfield; Sox Prospects)
Alex Speier also gives his thoughts on the Rule 5. (Alex Speier; WEEI.com)
During the Winter Meetings, Emma Span of Sports on Earth was interviewed by Carson Cistulli of Fan Graphs. Span told Cistulli that before she became a sportswriter she wrote blurbs about straight-to-video movies. There was no way to let that lie, so with the help of the Google machine, Carson located some of Ms. Span's work. Like Ms. Span herself, it is delightful. (Carson Cistulli; Not Graphs)
Apparently you are not allowed to touch these players. With supporting evidence! (Bryan Grosnick; The Platoon Advantage)