Yahoo sports has the story:
The New Jersey Nets say an MRI performed on forward Yi Jianlian confirmed that he has sprained a ligament in his right knee.
The Nets said Tuesday that Yi will begin rehabilitation immediately and there is no timetable for his return.
Get used to Bobby Simmons at the 4. It is probably the worst experiment in professional sports right now, but Lawrence Frank seems commited not to play Brook Lopez and Sean Williams at the same time. Match-up problems it creates be damned!
The other direction Frank might go is starting Eduardo Najera. He hinted at the possibility in practice today.