Forward Nick Collison will not participate in the Oklahoma City Thunder's training camp because of a bone bruise in his left knee.

The Thunder announced the decision Tuesday. Oklahoma City plays its first preseason game Oct. 6 against Charlotte in Fayetteville, N.C., but the regular season is a month away.

Center Nenad Krstic will also be limited in training camp after having surgery last week to repair a broken index finger on his right hand.