Toronto, ON -- (Sports Network) - Toronto Raptors center Jermaine O'Neal is listed as day-to-day with a strained left knee, the team announced on Saturday.

O'Neal suffered the injury early in the fourth quarter of Friday's 129-127 overtime loss to the New Jersey Nets.

He had medical images taken of the knee later on Friday, and they revealed no structural damage.

O'Neal went up for a layup under the basket and New Jersey's Sean Williams blocked the ball from behind and brought O'Neal down to the court. As he was falling his left knee -- already in a brace -- buckled as O'Neal winced in pain.

Williams was whistled for a flagrant foul one, but O'Neal missed both free throw attempts before exiting the court and heading for the locker room.

On the season, O'Neal has averaged 12.9 points and 9.3 rebounds in 12 games.