The 49ers are sticking with Troy Smith as their starting quarterback. San Francisco is 2-0 with the former Heisman winner as their starter. Alex Smith is healthy enough to play this coming Sunday after separating his left shoulder Oct. 24. "He's had a big part in us winning these last two games, and you want to keep that going and see how much is there," coach Mike Singletary said. "Our team understands that I'm going to go with the guy that is winning right now, the guy that has the hot hand and has made the difference in the past two weeks."