David Wright (back) is on track to return to the Mets lineup in approximately three weeks. Wright will head to Mets' extended spring training today. According to GM Sandy Alderson, Wright must "get looser and sort of reintroduce those muscles," before he can resume "extensive" baseball activities. "That's a several-day, maybe a week process. And then you're talking about batting practice and a whole host of other truly baseball activities before playing in a game. This still could be some period of time."