San Francisco 49ers cornerback Tramaine Brock (26) is congratulated by Eric Reid (35), Donte Whitner (31) and Carlos Rogers (22) after scoring a touchdown in the first quarter an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers cornerback Tramaine Brock celebrates after scoring a touchdown in the first half of an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

Houston Texans running back Ben Tate (44) is tackled by San Francisco 49ers linebacker Michael Wilhoite (57) as linebacker Dan Skuta moves in on the right, in the first half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

San Francisco 49ers running back Frank Gore (21) carries the ball across the line for a touchdown in the first half of an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

Houston Texans quarterback Matt Schaub throws a pass in the first half of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

Houston Texans tight end Owen Daniels, right, is tackled by San Francisco 49ers defensive back Perrish Cox in the first half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers running back Frank Gore (21) points up to the sky after scoring a touchdown in the first half of an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

Houston Texans quarterback Matt Schaub wipes his face after throwing a pass in the first half of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

Houston Texans wide receiver Keshawn Martin, right, bobbles but recovers a pass from quarterback Matt Schaub as San Francisco 49ers defensive back Darryl Morris (40) defends in the first half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

San Francisco 49ers cornerback Tramaine Brock, left, intercepts a pass intended for Houston Texans wide receiver Andre Johnson, right, in the first half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers defensive back Tramaine Brock (26) breaks up a catch from Houston Texans wide receiver DeAndre Hopkins (10) during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

San Francisco 49ers running back Anthony Dixon leaps across the goal line after scoring a touchdown in the first half of an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers wide receiver Kyle Williams, right, carries the ball as Houston Texans wide receiver DeVier Posey pulls his jersey in the first half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

San Francisco 49ers quarterback Colin Kaepernick (7) throws a pass to Vernon Davis for a touchdown in the second half of an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

San Francisco 49ers safety Donte Whitner, left, recovers a fumble by Houston Texans running back Ben Tate (44) in the second half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers tight end Vernon Davis, left, shoots the football over the goal post like a basketball after he scored a touchdown as teammate Colin Kaepernick, right, watches in the second half of an NFL football game against the Houston Texans in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

San Francisco 49ers defensive tackle Justin Smith (94) stops Houston Texans running back Arian Foster as he carries the ball in the third quarter of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

Houston Texans wide receiver DeAndre Hopkins, right, makes an 18-yard gain under pressure from San Francisco 49ers safety Eric Reid (35), cornerback Tramaine Brock (26) and linebacker NaVorro Bowman in the second half of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

Houston Texans quarterback Matt Schaub throws a pass in the second half of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Beck Diefenbach)

San Francisco 49ers tight end Vernon Davis (85) avoids the tackle by Houston Texans free safety Ed Reed to score a touchdown in the fourth quarter of an NFL football game in San Francisco, Sunday, Oct. 6, 2013. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers running back Frank Gore (21) celebrates his touchdown run during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

San Francisco 49ers running back Frank Gore (21) scores a touchdown during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

Houston Texans defensive end J.J. Watt (99) during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

San Francisco 49ers running back Frank Gore (21) is tackled by Houston Texans strong safety Danieal Manning (38) during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

General View of Candlestick Park during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

San Francisco 49ers quarterback Colin Kaepernick (7) runs with the ball during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

San Francisco 49ers quarterback Colin Kaepernick (7) runs with the ball during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

Houston Texans wide receiver Andre Johnson (80) yells at a referee during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

San Francisco 49ers quarterback Colin Kaepernick (7) throws during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

Houston Texans running back Arian Foster (23) runs with the ball during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)

Houston Texans quarterback Matt Schaub (8) throws during the NFL regular season game between the Houston Texans and the San Francisco 49ers on Sunday, Oct. 6, 2013 at Candlestick Park in San Francisco. (Ric Tapia/NFL)