49ers coach Mike Singletary went to backup Alex Smith to start the second half of the game against the Texans after starting QB Shaun Hill struggled again.
Hill completed 6 of 11 passes for 45 yards in the first half, but the 49ers failed to score any points and trailed 21-0. Hill also struggled two weeks ago in a 45-10 loss to the Falcons, going 15 of 38 for 198 yards and no touchdowns with one interception.
Smith, the No. 1 overall draft pick by the 49ers in 2005, hadn’t played in an NFL regular-season game since 2007 because of injuries. But he looked solid on his first drive against the Texans, throwing a 29-yard touchdown pass to TE Vernon Davis.
Davis went to the sideline in pain after scoring the TD, but he just had the wind knocked out of him after taking a knee to the chest.