http://lakers.freedomblogging.com/2008/10/01/vujacic-sprains-left-ankle/ I heard am570 was reporting the injury was similar to Luke's sprained ankle last year. Hopefully it doesn't linger all year, like Luke's did.
Can't say that I'm worried. There's still a month before the season starts, and unless it's a Luke-esque sprain, we should have him back by pre-season.