San Francisco 49ers running back Frank Gore (21) runs past Detroit Lions defensive tackle Sammie Lee Hill (79) in the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers cornerback Shawntae Spencer (36) defends against a pass intended for Detroit Lions wide receiver Calvin Johnson in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Fans prepare for an NFL football game between the Detroit Lions and the San Francisco 49ers in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers quarterback Alex Smith (11) passes as Detroit Lions safety Louis Delmas (26) applies pressure in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers wide receiver Michael Crabtree (15) makes a 50-yard pass-reception in front of Detroit Lions cornerback William James (41) in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers head coach Mike Singletary before an NFL football game against the Detroit Lions in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Cheerleaders perform before an NFL football game between the Detroit Lions and the San Francisco 49ers in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Fans watch as the Detroit Lions play the San Francisco 49ers in an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Scot Tucker)

San Francisco 49ers tight end Delanie Walker, left, is tackled by Detroit Lions linebacker DeAndre Levy (54) in the second quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions quarterback Drew Stanton (5) scrambles away from San Francisco 49ers linebacker Patrick Willis (52) in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers running back Frank Gore (21) is tackled by Detroit Lions defensive tackle Sammie Lee Hill (79) in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers cheerleaders perform during an NFL football game against the Detroit Lions in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers tight end Delanie Walker (46) is pursued by Detroit Lions linebacker DeAndre Levy (54) in an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions quarterback Drew Stanton (5) in action quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions running back Maurice Morris (28) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions running back Maurice Morris (28) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Cheerleaders perform before an NFL football game between the Detroit Lions and the San Francisco 49ers in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions wide receiver Calvin Johnson (81) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers wide receiver Michael Crabtree (15) and Detroit Lions cornerback William James (41) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions defensive end Jason Hunter (97) sacks San Francisco 49ers quarterback Alex Smith (11) in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions quarterback Drew Stanton (5) passes against the San Francisco 49ers in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions wide receiver Calvin Johnson (81) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions defensive end Jason Hunter, right, sacks San Francisco 49ers quarterback Alex Smith (11) in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers running back Frank Gore (21) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers linebacker Patrick Willis (52) reacts in the second quarter of an NFL football game against the Detroit Lions in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers wide receiver Michael Crabtree (15) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions wide receiver Derrick Williams (12) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers quarterback Alex Smith (11) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions defensive end Jason Hunter (97) sits on the bench in the third quarter of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers running back Frank Gore (21) in action during the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

San Francisco 49ers running back Frank Gore (21) celebrates after scoring on a one-yard touchdown run against the Detroit Lions in the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers cornerback Tarell Brown, top, breaks up a pass intended for Detroit Lions wide receiver Bryant Johnson, bottom, in the fourth quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers running back Frank Gore (21) in action during the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions wide receiver Dennis Northcutt (86) in action during the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers running back Frank Gore (21) in action during an NFL football game against the Detroit Lions in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions head coach Jim Schwartz during the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)

Detroit Lions running back Maurice Morris (28) in action during the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Detroit Lions quarterback Drew Stanton (5) in action during the third quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

Cheerleaders perform during the second quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers defensive end Demetric Evans, bottom, tries to grab a fumble by Detroit Lions quarterback Drew Stanton (5) in front of Lions offensive tackle Jeff Backus, center, in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. 49ers' Takeo Spikes recovered the ball. The 49ers won 20-6. (AP Photo/Marcio Jose Sanchez)

Detroit Lions quarterback Drew Stanton (5) stands on the sidelines in the fourth quarter of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Dec. 27, 2009. The 49ers won 20-6. (AP Photo/Tony Avelar)

San Francisco 49ers head coach Mike Singletary waves after the 49ers defeated the Detroit Lions in an NFL football game in San Francisco, Sunday, Dec. 27, 2009. The 49ers won 20-6. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers cornerback Dre' Bly (31) recovers a fumble by Detroit Lions wide receiver Calvin Johnson (81) in the fourth quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. The 49ers won 20-6. (AP Photo/Tony Avelar)

San Francisco 49ers quarterback Alex Smith (11) passes as Detroit Lions defensive end Cliff Avril center jumps over 49ers running back Frank Gore (21) in the second quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. The 49ers won 20-6. (AP Photo/Tony Avelar)

Detroit Lions wide receiver Calvin Johnson (81) is tackled by San Francisco 49ers linebacker Patrick Willis (52) and safety Dashon Goldson (38) in the first quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. The 49ers won 20-6. (AP Photo/Tony Avelar)

San Francisco 49ers quarterback Alex Smith (11) in action during the second quarter of an NFL football game in San Francisco, Sunday, Dec. 27, 2009. (AP Photo/Tony Avelar)