****UPDATE**** Davis is officially listed as "out" with a concussion.
Tight end Vernon Davis, who has been one of only two reliable pass-catching targets for the 49ers this year, left the field before the half with a possible concussion. Davis hit the ground hard after what appeared to be a short catch and fumble near the goal line.
The play was ruled an incompletion on the field and upheld after an official review. The 49ers already are without third tight end Garrett Celek, who hurt his hamstring in the first quarter and has been ruled out for the rest of the game. The team has one healthy tight end, rookie Vance McDonald; defensive end Demarcus Dobbs has played some tight end in the past but didn't do much in that regard this past offseason.
Davis entered the game second to receiver Anquan Boldin in catches and receiving yards with 29 for 518 yards. His seven receiving touchdowns leads the 49ers.
The 49ers, meanwhile, have been more lucky than good in the first half, and they lead 9-7.
The Panthers dropped an easy interception opportunity on San Francisco's opening drive. Then after deflecting a 49ers punt, the bouncing ball hit a Panthers player and the 49ers recovered it 29 yards down field for a fresh set of downs. The 49ers converted the turnover into a 43-yard field goal from Phil Dawson, who had a 53 yarder on San Francisco's opening drive.
The incompletion on the pass to Davis also seemed like a catch and fumble. The 49ers, however, couldn't punch the ball into the end zone after it was ruled an incompletion, and they settled for Dawson's third field goal of the half. The 49ers have converted only one third-down opportunity in the game, and it came on their final possession.
One newcomer, receiver Mario Manningham, has played the lion's share of the snaps in the first half. Outside linebacker Aldon Smith, however, only has been in for two snaps, both of them on third down. Smith missed the team's last five games while enrolled in an out-of-state treatment program.
-- Matt Barrows