Lakers center Andrew Bynum injured

LOS ANGELES (AP) -Lakers center Andrew Bynum was helped off the court with a sprained left knee early in the third quarter of Sunday night's game against the Memphis Grizzlies.

The 20-year-old Bynum, a key factor in the Lakers' excellent start this season, came down on teammate Lamar Odom's left foot while going for a rebound under the Memphis basket and dropped to the floor in obvious pain, clutching his knee.

Lakers spokesman John Black said X-rays of Bynum's knee were negative, but an MRI would be taken Monday and Bynum wouldn't travel to Seattle for that night's game against the SuperSonics.

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