SAN FRANCISCO – Some decisions aren't going to be easy for San Francisco 49ers coach Mike Singletary.
After the Niners concluded their preseason schedule with a 4-0 record by beating the San Diego Chargers 17-10 on Thursday night, Singletary said he and his coaching staff would have some tough choices to make before cutting the roster from 75 to 53 players by Saturday.
One of them: whether to keep Nate Davis as the team's No. 3 quarterback.
Although Davis drove the 49ers 81 yards to the deciding touchdown in the fourth quarter, he again had moments of indecision and confusion. He finished 11 of 22 passing with two interceptions and a 40.5 passer rating.
Asked if it was possible that he could keep just Alex Smith and David Carr as his two quarterbacks on the roster, Singletary said, "At this point, I just feel like Nate Davis is going to be a topic of conversation tomorrow. How much I don't know. But it could happen."
Other topics after the game:
-- Linebacker Bruce Davis looked like an almost certain roster cut, but he helped himself with five tackles, 1½ sacks, two tackles for loss and two quarterback hurries.
"I thought he did a real nice job," Singletary said. "He's been pretty consistent since he's been here. I thought he helped himself."
Davis, who was signed as a camp body on Aug. 10 after a number of injuries at linebacker, said he knew he was on the bubble at the start of the game.
"My mindset tonight was to do everything I could to make a case to be here on Monday," he said. "I feel like I did that. Whatever happens, I have no regrets. I played my heart out."
-- One player who has no worries about the roster is running back Anthony Dixon. He rushed for 80 yards on 12 carries and one touchdown, giving him at least one TD in every preseason game.
"When you have a guy like that, there's going to be a role for him," Singletary said. "What it is right now, it will define itself."
"Eventually, coach will call my number again," he said. "When he does, I'll be ready."
-- Nose tackle Aubrayo Franklin, who signed his one-year tender last Saturday, suited up and played in one series. He looked in good shape and had a hand in a tackle.
"It was good to get him in there and get the guys playing together and get a feel for it," Singletary said. The 49ers had their first unit defense on the field early in the game.
-- The Niners' perfect record marked the first time since going 5-0 in 1992 that the team had an unbeaten preseason. So what did it mean?
"Trust me, I've been 4-0 before in preseason and gotten the crap kicked out of you in the regular season," Singletary said. "We're smart enough to know that. We have a lot of detail work to do. I'm looking forward to that and to getting in the rhythm of the regular season."