Houston worked a trade with Atlanta to acquire Schaub, who had been the backup quarterback to Michael Vick with the Falcons. The Texans then released David Carr, the only starting signal caller the franchise had ever had.
Schaub completed 16 of 22 passes, seven of those throws going to Andre Johnson for 142 yards.
Mario Williams, Houston's controversial No. 1 draft choice of a year ago, returned a fumble 38 yards for his first NFL touchdown, and he had two sacks. The Texans chose Williams over quarterback Vince Young or running back Reggie Bush in the 2005 draft.