Update #1: Doesn't appear to be an issue with the knee. Per Greenspan:
USC DE Nick Perry only suffered a sprained ankle yesterday and is in a walking boot.
Update #2: Bruce Feldman is saying that Perry will miss two weeks:
USC DE Nick Perry has a high-ankle sprain. A source told me he'll be out for two weeks.
Update #3: The timetable for Perry's recovery has been lengthened from 2-4 weeks. Per CFT:
Defensive end Nick Perry suffered an injury to his right ankle Wednesday, but it was thought at the time that it was just a mild sprain.
The sprain part was correct, but unfortunately the mild part wasn't as Kiffin confirmed Thursday afternoon that Perry has incurred the dreaded high-ankle sprain. The coach said the redshirt sophomore, who was wearing a protective boot on his injured foot during practice today, is expected to be out for a period of 2-4 weeks.
Not sure how bad this is...but this is much more important than D-Bax.
USC DE Nick Perry suffered a right knee injury in goal line drills Wednesday and was carted off.
Dan Greenspan
DanGreenspan
Lets hope for the best...