Didn't look it. Rolled his ankle but was able to walk off on his own power and even tried to return to the game. He was obviously hobbled, but still if this was anybody but Webb I would expect him to be back to 100% pretty quickly.
I'm sure they'll reevaluate it this morning to check on the swelling etc., but at this point I'm guessing something like the mild Bibby sprain from a week or two ago.