"I liked it," Willis said. "I had a good week of practice and felt comfortable doing it."

Willis recorded a team-high eight tackles, but missed an opportunity in the fourth quarter to record an interception deep in 49ers' territory. He couldn't hold onto Donovan McNabb's pass for Baskett. Two plays later, the Eagles kicked the go-ahead field goal.

--Allen Rossum got the first offensive start of his NFL career, when he lined up at receiver on the first play of the game. Rossum also caught his first NFL pass -- a 4-yarder -- in the game. Rossum had nine previous NFL starts, all at cornerback. Earlier this season, he scored his first offensive touchdown on an end around.

--Coach Mike Nolan challenged a call on Sunday that he probably should not have been allowed to challenge in the first place. After Eagles' kicker David Akers' go-ahead 38-yard field goal was ruled good, Nolan said he asked the officials if he could challenge the call.

Field goals can only be challenged if it was ruled to be below the top of the upright. Referee Ron Winter informed Nolan the kick was below the upright, thus making it challengeable. The call was not overturned, as replays seemed to show the ball was over the upright, making any use of replace inconclusive.

"They have to correct that," Nolan said. "There's got to be some kind of signal that says it's not only good but it's not challengeable or it is. Obviously, that didn't cost us the game. But anyway, it's something they've got to fix."