On Houston's second drive, Randy Bullock hooked a 45-yard field goal try wide left — and the 49ers capitalized afterward again with Gore's touchdown late in the first quarter. Bullock produced the Texans' lone points with a 41-yard field goal in the third.
Missing three key defenders for the second straight game, San Francisco's opportunistic D still didn't flinch and kept the penalties in check after early season problems with flags.
Kubiak turned to Yates in the fourth quarter and Ben Tate lost a fumble on Yates' second play, with San Francisco's Tarell Brown recovering. The 49ers, who had lost their last two Sunday night games both to the Seahawks, amassed 177 yards rushing with five different players each making a run of 11 or more yards.
Notes: Texans WR Keshawn Martin injured his should. His status is unclear. ... Texans TE Owen Daniels made six receptions for 60 yards, giving him at least one catch in 88 straight regular-season games. ... Texans DE Antonio Smith saw the end to his streak of four straight regular-season games with at least a half-sack.
AP NFL website: www.pro32.ap.org