The expectation within the Raiders organization that quarterback Carson Palmer would start Sunday against Kansas City has shifted to where two people familiar with the situation now believe it is unlikely that will happen. No final decision has been made. "I'm 95 percent sure he is not going to play," a source said. "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." When Oakland acquired Palmer this week, certain Raiders coaches expected their new quarterback would start Sunday.