Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Police officer Roland Canales and his bomb/patrol dog "Pyro" provide extra security during the Houston Texans v San Francisco 49ers pre-season game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Ahmad Brooks #55 and Carlos Rogers #22 of the San Francisco 49ers celebrates after Brooks runs back an interception for a touchdown against the Houston Texans in the first quarter during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Owens Daniels #81 of the Houston Texans catches a touchdown pass in front of Madieu Williams #20 of the San Francisco 49ers in the second quarter during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Owens Daniels #81 of the Houston Texans celebrates after catching a touchdown pass against the San Francisco 49ers in the second quarter during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Matt Schaub #8 of the Houston Texans drops back to pass against the San Francisco 49ers during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Ahmad Brooks #55 of the San Francisco 49ers runs back an interception for a touchdown against the Houston Texans in the first quarter during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Coach Jim Harbaugh of the San Francisco 49ers looks on against the Houston Texans during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Alex Smith #11 of the San Francisco 49ers roles out to pass against the Houston Texans during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Ahmad Brooks #55 and Patrick Willis #52 of the San Francisco 49ers celebrates after Brooks runs back an interception for a touchdown against the Houston Texans in the first quarter during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

(credit: Thearon W. Henderson/Getty Images)

SAN FRANCISCO - AUGUST 27: Matt Schaub #8 of the Houston Texans drops back to pass against the San Francisco 49ers during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Arian Foster #23 of the Houston Texans walks off the field holding his hamstring muscle against the San Francisco 49ers during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Derrick Ward #32 of the Houston Texans goes up and over to score a touchdown against the San Francisco 49ers in the first quarter during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)

Houston Texans v San Francisco 49ers

SAN FRANCISCO - AUGUST 27: Coach Jim Harbaugh of the San Francisco 49ers looks on against the Houston Texans during an NFL pre-season football game at Candlestick Park August 27, 2011 in San Francisco, California. (Photo by Thearon W. Henderson/Getty Images)