San Francisco 49ers quarterback Colin Kaepernick (7) runs with the ball during the week three NFL game between the Indianapolis Colts and the San Francisco 49ers on Sunday, Sep. 22, 2013 at the Candlestick Park in San Francisco. (Ric Tapia/NFL)

Indianapolis Colts quarterback Andrew Luck (12) is sacked by San Francisco 49ers defensive end Justin Smith (94) and San Francisco 49ers defensive end Ray McDonald (91) during the week three NFL game between the Indianapolis Colts and the San Francisco 49ers on Sunday, Sep. 22, 2013 at the Candlestick Park in San Francisco. (Ric Tapia/NFL)

Indianapolis Colts wide receiver Darrius Heyward-Bey (81) during the week three NFL game between the Indianapolis Colts and the San Francisco 49ers on Sunday, Sep. 22, 2013 at the Candlestick Park in San Francisco. (Ric Tapia/NFL)

Indianapolis Colts quarterback Andrew Luck (12) during the week three NFL game between the Indianapolis Colts and the San Francisco 49ers on Sunday, Sep. 22, 2013 at the Candlestick Park in San Francisco. (Ric Tapia/NFL)

Indianapolis Colts quarterback Andrew Luck (12) passes against the San Francisco 49ers during the first quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Ben Margot)

Indianapolis Colts running back Trent Richardson, right, scores on a one-yard touchdown run against the San Francisco 49ers in the first half of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Ben Margot)

Indianapolis Colts running back Trent Richardson celebrates after scoring on a one-yard touchdown run against the San Francisco 49ers during the first quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Ben Margot)

San Francisco 49ers running back Kendall Hunter, left, celebrates with quarterback Colin Kaepernick after running for a 13-yard touchdown against the Indianapolis Colts during the first quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Marcio Jose Sanchez)

Indianapolis Colts running back Ahmad Bradshaw (44) carries the ball past San Francisco 49ers safety Donte Whitner (31) and linebacker Aldon Smith (99) in the first half of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers running back Kendall Hunter (32) runs for a 13-yard touchdown against the Indianapolis Colts during the first quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers quarterback Colin Kaepernick (7) is tripped up by Indianapolis Colts linebacker Bjoern Werner during the second quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Aaron Kehoe)

San Francisco 49ers quarterback Colin Kaepernick (7) throws a pass in the second half of an an NFL football game against the Indianapolis Colts in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Marcio Jose Sanchez)

Indianapolis Colts running back Trent Richardson (34) runs against San Francisco 49ers cornerback Tarell Brown (25) during the third quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Ben Margot)

San Francisco 49ers quarterback Colin Kaepernick (7) passes as Indianapolis Colts outside linebacker Indianapolis Colts defensive end Fili Moala (95) applies pressure during the third quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Aaron Kehoe)

Indianapolis Colts quarterback Andrew Luck (12) runs past San Francisco 49ers cornerback Tarell Brown during the third quarter of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Aaron Kehoe)

Indianapolis Colts wide receiver Reggie Wayne (87) runs past San Francisco 49ers linebacker Patrick Willis and safety Donte Whitner (31) during the second half of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Aaron Kehoe)

Indianapolis Colts running back Ahmad Bradshaw (44) is upended while carrying the ball as San Francisco 49ers linebacker Ahmad Brooks (55) moves in to block in the second half of an NFL football game in San Francisco, Sunday, Sept. 22, 2013. Also seen are 49ers safety Eric Reid (35) and Colts fullback Stanley Havili (39). (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers head coach Jim Harbaugh, foreground, stands on the sideline during the fourth quarter of an NFL football game against the Indianapolis Colts in San Francisco, Sunday, Sept. 22, 2013. (AP Photo/Marcio Jose Sanchez)