On a night when San Francisco's offensive stars sat out, the 49ers got more big plays on the other side of the ball to cap their first unbeaten preseason in 18 years.
Manny Lawson and rookie Taylor Mays each had interceptions and rookie Anthony Dixon ran 46 yards for a first-half touchdown in the Niners' 17-14 victory over the San Diego Chargers on Thursday night.
Jehuu Caulcrick caught a 2-yard touchdown pass from Nate Davis with 8:41 left and Joe Nedney added a 25-yard field goal. San Francisco (4-0) went undefeated in its exhibition schedule for the first time since a 5-0 showing in 1992.
Coach Mike Singletary wasn't overly excited about the record considering it doesn't count.
"Trust me, I've been 4-0 before in preseason," Singletary said. "I'm very thankful the preseason is over. This game, I'm just glad to get it over with. It was a good game to win, a good game to close out on."
RB Anthony Dixon has shown a strong performance in the preseason to be listed as the 49ers #2 RB despite the signing of Brian Westbrook.