Red Sox center fielder Jacoby Ellsbury exited Friday's home opener in the fourth inning with what CBSSports.com Insider Jon Heyman reports is a right shoulder injury:

Ellsbury Injury

Ellsbury was injured while attempting to break up a double play. Rays shortstop Reid Brignac fell directly on Ellsbury after the hard slide. Here's video of the injury courtesy of Rays Index.

UPDATE: Ellsbury reportedly has a dislocated shoulder and will miss six to eight weeks.