I'm not even sure what happened yet. I turned on the game on WGN Radio, and they said Lee left for "unknown reasons", and they'd update when they got info. I haven't heard yet what happened. I'm going to go check out cubs.com to see...

Edited to add: He aggrivated his shoulder. They say it's been bothering him for a while now, and he bowed out of the Home Run Derby because of it.

http://chicago.cubs.mlb.com/NASApp/mlb/n...t=.jsp&c_id=chc