Portland Trail Blazers rookie Greg Oden will not play in the 2009 T-Mobile Rookie Challenge & Youth Jam this evening after experiencing discomfort in his left (non operative) knee.

Oden underwent a precautionary MRI today, which revealed some swelling and a chip fracture of the patella.

Oden, who practiced with the Rookie Team today, felt some discomfort after bumping knees with the Warriors’ Corey Maggette in the fourth quarter of last night’s game at Golden State.

He is listed as day-to-day and will be reevaluated upon return to Portland.