The expectation within the Oakland Raiders organization that quarterback Carson Palmer would start Sunday against Kansas City has shifted. Two people familiar with the situation now believe it is unlikely Palmer will start.

No final decision has been made.

"I'm 95 percent sure he is not going to play," one source close to the situation said Friday afternoon. "Practicing Wednesday and Thursday, he felt he's not ready to make those high-velocity throws yet. Maybe they could decide something at the last minute, but I don't think he's going to play."