San Francisco 49ers place kicker David Akers celebrates after kicking a 53-yard field goal in the second half of an NFL football game against the Cincinnati Bengals, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers running back Kendall Hunter (32) runs for a seven-yard touchdown past Cincinnati Bengals defensive end Michael Johnson (93) and linebacker Thomas Howard (53) in the second half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

San Francisco 49ers quarterback Alex Smith (11) passes against the Cincinnati Bengals in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals quarterback Andy Dalton (14) passes under pressure from San Francisco 49ers defensive tackle Ray McDonald (91) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Cincinnati Bengals defensive tackle Domata Peko (94) and safety Chris Crocker (42) celebrate after sacking San Francisco 49ers quarterback Alex Smith (11) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Cincinnati Bengals wide receiver Andre Caldwell (87) is tackled by San Francisco 49ers cornerback Carlos Rogers (22) after a pass reception in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals wide receiver Jerome Simpson (89) runs downfield against San Francisco 49ers cornerback Shawntae Spencer in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals quarterback Andy Dalton (14) gets a pass off under pressure from San Francisco 49ers linebacker Ahmad Brooks (55) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Al Behrman)

Cincinnati Bengals wide receiver A.J. Green (18) is pursued by San Francisco 49ers cornerback Carlos Rogers (22) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals wide receiver Jerome Simpson (89) is tackled by San Francisco 49ers cornerback Shawntae Spencer (36) and linebacker NaVorro Bowman (53) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers tight end Vernon Davis (85) is tackled by Cincinnati Bengals linebacker Rey Maualuga (58) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Cincinnati Bengals head coach Marvin Lewis urges on his players in the first half of an NFL football game against the San Francisco 49ers, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers linebacker Parys Haralson (98) tries to strip the ball from Cincinnati Bengals running back Bernard Scott (28) in the first half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers tight end Vernon Davis (85) pushes off Cincinnati Bengals safety Reggie Nelson in the second half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers running back Frank Gore is tackled by Cincinnati Bengals linebacker Rey Maualuga, right, after a short gain in the first half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers quarterback Alex Smith (11) hands off to running back Frank Gore (21) in the first half of an NFL football game against the Cincinnati Bengals, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers quarterback Alex Smith (11) runs a play against the Cincinnati Bengals in the first half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Cincinnati Bengals wide receiver Andre Caldwell (87) is tackled by San Francisco 49ers linebacker Patrick Willis (52) after a pass reception in the first half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers quarterback Alex Smith passes against the Cincinnati Bengals in the first half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals wide receiver Andre Caldwell falls forward after a short pass reception against San Francisco 49ers linebacker Patrick Willis in the first half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Al Behrman)

San Francisco 49ers quarterback Alex Smith (11) passes under pressure from Cincinnati Bengals defensive end Michael Johnson (93) while offensive tackle Joe Staley blocks in the second half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Cincinnati Bengals running back Cedric Benson (32) is tackled by San Francisco 49ers linebacker Patrick Willis (52) and cornerback Carlos Rogers (22) in the second half of an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers head coach Jim Harbaugh, left, talks with quarterback Alex Smith (11) in the second half of an NFL football game against the Cincinnati Bengals, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

San Francisco 49ers fullback Bruce Miller (49) is tackled by Cincinnati Bengals cornerback Nate Clements (22) in the second half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

San Francisco 49ers safety Reggie Smith intercepts a pass in the second half of an NFL football game against the Cincinnati Bengals, Sunday, Sept. 25, 2011, in Cincinnati. San Francisco defensive tackle Ray McDonald (91) watches with Bengals guard Nate Livings (62). (AP Photo/Ed Reinke)

Sep 25, 2011; Cincinnati, OH, USA; Cincinnati Bengals cheerleaders perform during a time out in the second half against the San Francisco 49ers at Paul Brown Stadium. The 49ers won 13-8. Mandatory Credit: Frank Victores-US PRESSWIRE

San Francisco 49ers quarterback Alex Smith (11) meets with Cincinnati Bengals defensive tackle Domata Peko (94) after the 49ers defeated the Bengals 13-8 in an NFL football game on Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals tight end Jermaine Gresham (84) is tackled by San Francisco 49ers linebacker Patrick Willis (52) in the second half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

San Francisco 49ers running back Kendall Hunter runs for a seven yard touchdown in the second half of an NFL football game against the Cincinnati Bengals, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Ed Reinke)

Cincinnati Bengals quarterback Andy Dalton (14) is pursued by San Francisco 49ers defensive tackle Ray McDonald (91) in the second half of an NFL football game, Sunday, Sept. 25, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Sep 25, 2011; Cincinnati, OH, USA; Cincinnati Bengals cheerleaders perform during a time out in the second half against the San Francisco 49ers at Paul Brown Stadium. The 49ers won 13-8. Mandatory Credit: Frank Victores-US PRESSWIRE