Jacoby Ellsbury tweeted Saturday morning that the injury he suffered during Friday's 12-2 win against the Tampa Bay Rays is a shoulder subluxation.
According to Ellsbury, there is no timetable for his return, but injuries of a similar nature typically require 4 to 6 weeks of recovery, and potentially more time depending on whether he suffered any further damage to his surrounding muscles or tendons.
Ellsbury was injured during the bottom of the fourth inning when he slid into second base in an attempt to break up a double play. The clean slide made contact with Rays shortstop Reid Brignac, who fell on Ellsbury's shoulder after completing the double play.
Losing Ellsbury for an extended period of time will surely hurt the Red Sox, who are now prepared to call up a player for Saturday's game against Tampa Bay. Ellsbury finished second in the 2011 AL MVP voting after batting .321 with 32 home runs and 105 RBI.