This sucks for him. Pretty sure he's the only one who sacrificed a ton of money for a shot at a ring. Last year a flagrant foul and his shoulder is dislocated, this year a concussion on "incidental contact."
http://www.cleveland.com/cavs/index...e_concussion_ruled_ou.html#incart_river_index
http://www.cleveland.com/cavs/index...e_concussion_ruled_ou.html#incart_river_index