San Antonio Spurs/NBA(SAN ANTONIO) -- San Antonio Spurs forward Tim Duncan is listed as day-to-day after undergoing a MRI on his left knee Sunday, that revealed no structural damage.

The two-time NBA MVP had to be helped off the court in the second quarter of the Spurs game against the Washington Wizards Saturday, when Wizards forward Martell Webster rolled into the back of Duncan's knee while fighting for a rebound.

The Spurs (38-11) have the best record in the NBA.

Duncan is averaging 17.3 points, 9.7 rebounds and 2.7 blocks per game this season.

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