Carolina Panthers' Matt Moore (3) looks to pass against the San Francisco 49ers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' Jonathan Stewart (28) runs past San Francisco 49ers' Nate Clements (22) in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

A Carolina Panthers fan watches warmups before an NFL football game against the San Francisco 49ers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' Jonathan Stewart (28) is tackled by San Francisco 49ers' Nate Clements (22) in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

San Francisco 49ers' Vernon Davis (85) catches a touchdown pass against the Carolina Panthers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

San Francisco 49ers' Alex Smith (11) directs his team against the Carolina Panthers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

San Francisco 49ers quarterback Alex Smith (11) rolls out against the Carolina Panthers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' Steve Smith (89) runs past San Francisco 49ers' Patrick Willis (52) in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' DeAngelo Williams (34) fumbles the ball after being hit by San Francisco 49ers' Nate Clements (22) as 49ers' Dashon Goldson (38) closes in during the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. The 49ers recovered the ball. (AP Photo/Rusty Burroughs)

San Francisco 49ers' Ted Ginn Jr. (19) reaches in vain for a catch as Carolina Panthers' Captain Munnerlyn (41) defends in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' Dante Rosario (88) is tackled by San Francisco 49ers' Dashon Goldson (38) after a catch in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

San Francisco 49ers' Vernon Davis (85) is tackled by Carolina Panthers' Charles Godfrey (30) after a catch in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rusty Burroughs)

San Francisco 49ers head coach Mike Singletary reacts to a call in the first half of an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' David Gettis (12) runs into the end zone for a touchdown against the San Francisco 49ers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' Matt Moore (3) is sacked by San Francisco 49ers' Nate Clements in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' Matt Moore (3) throws a pass against the San Francisco 49ers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' David Gettis (12) reacts after a touchdown catch against the San Francisco 49ers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' Matt Moore (3) is sacked by San Francisco 49ers' Nate Clements (22) in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' DeAngelo Williams (34) is tackled by San Francisco 49ers' Patrick Willis (52) in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

San Francisco 49ers coach Mike Singletary, right, reacts to an officials' call in the first half of an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

San Francisco 49ers' Frank Gore (21) runs against the Carolina Panthers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

San Francisco 49ers quarterback Alex Smith (11) prepares to throw a pass against the Carolina Panthers in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' Matt Moore (3) throws a pass under pressure from San Francisco 49ers' Ricky Jean-Francois (95) during the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers head coach John Fox looks on during the first half of an NFL football game against the San Francisco 49ers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers place kicker John Kasay (4) reacts after making a field goal during the third quarter as San Francisco 49ers' Dashon Goldson (38) walks away in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rusty Burroughs)

Carolina Panthers placekicker John Kasay (4) boots the game-winning field goal in the final minute of the Panthers' 23-20 win over the San Francisco 49ers in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' Matt Moore (3) prepares to throw a pass during an NFL football game against the San Francisco 49ers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Mike McCarn)

San Francisco 49ers' Frank Gore (21) runs the ball during an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Mike McCarn)

Carolina Panthers' Matt Moore (3) is shown during an NFL football game against the San Francisco 49ers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Mike McCarn)

San Francisco 49ers' Alex Smith (11) looks for a receiver during an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Mike McCarn)

San Francisco 49ers' David Carr (5) throws a pass against the Carolina Panthers during the fourth quarter of the Panthers' 23-20 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

San Francisco 49ers' Alex Smith looks on from the sidelines after being injured during the second half against the Carolina Panthers in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

San Francisco 49ers' Alex Smith, bottom, is sacked by Carolina Panthers' Charles Johnson, top, during the second half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. Smith was injured on the play. (AP Photo/Rick Havner)

Carolina Panthers' David Gettis (12) catches a touchdown pass as San Francisco 49ers' Shawntae Spencer (36) defends during the second half of the Panthers' 23-20 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

San Francisco 49ers' Ray McDonald (91) returns an interception for a touchdown as Carolina Panthers' Matt Moore (3) tries to defend during the fourth quarter of the Panthers' 23-20 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rusty Burroughs)

Carolina Panthers placekicker John Kasay (4) boots the game-winning field goal over the San Francisco 49ers during the final minute of the fourth quarter of the Panthers' 23-20 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rusty Burroughs)

San Francisco 49ers' Frank Gore (21) runs against the Carolina Panthers during the second half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

in the first half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' Tyler Brayton (96) in the first half of an NFL football game against the San Francisco 49ers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

Carolina Panthers' David Gettis (12) catches a pass as San Francisco 49ers' Nate Clements (22) defends during the second half of an NFL football game in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Chuck Burton)

Carolina Panthers' DeAngelo Williams (34) in the first half of an NFL football game against the San Francisco 49ers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

San Francisco 49ers' Tarell Brown (25) is taken off the field in the first half of an NFL football game against the Carolina Panthersin Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)

San Francisco 49ers' Frank Gore (21) in the first half of an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 24, 2010. (AP Photo/Rick Havner)