Ellsbury's injury occurred when he tried to break up a double play attempt. Ellsbury slid hard feet first into second base and then collided with Rays' second baseman Reid Brignac. Brignac fell on top of Ellsbury's right shoulder after following through on his throw to first base.
Watch the play which caused the injury to Ellsbury here (via Rays Index).
The 28-year-old 2011 AL MVP runner-up left the field holding his right shoulder. Ellsbury was 2-3 with an RBI and a run scored in the game before the injury. For the season, Ellsbury was hitting just .192 with 3 RBI, four walks and three strikeouts.