According to the Lakers.com Basketblog….
UPDATE: DJ had a CT scan and was diagnosed with bruised ribs. He is officially being listed as Day-to-Day.
After practice broke on Monday a group of eight Lakers held back to play a 4-on-4 game while the other players attended to the assembled media.
Center DJ Mbenga got caught up with some of the other participants and ended up on the floor with a look of agony on his face as teammates and team medical personnel gathered around.
From how DJ was holding his side it looks like something in the rib area, but nothing official has been released.