The Ravens vividly remember how Texans quarterback Matt Schaub tore them apart last season, throwing for 393 yards and three touchdowns. Schaub’s top target, Andre Johnson, is expected to miss the game with a hamstring injury. Johnson caught nine balls for 140 yards and two touchdowns against the Ravens last season. Still, Schaub has plenty of other weapons as he proved against the Raiders, when he threw for 416 yards without Johnson on the field. The Texans love to run play-action, and Schaub will look to big and athletic tight end Owen Daniels (21 catches, three TDs), sure-handed receiver Kevin Walter (two TDs) and Foster out of the backfield. The Ravens’ pass defense is allowing 212 yards per game, the eighth lowest total in the NFL. Cornerbacks Cary Williams and Lardarius Webb have played well, but it is the Ravens pass rush, led by Terrell Suggs and Haloti Ngata, that has given opposing quarterbacks the most trouble. In the last five quarters, the Ravens’ defense has four touchdowns, one on an interception return and three on fumble returns.