HOUSTON -- Houston quarterback Matt Schaub returned to practice Tuesday, though it's not clear whether he will start against the Jets in this Sunday's season opener.
Schaub took half the snaps in practice, his first significant work since the injury Aug. 31 against the Vikings. He is listed as day to day.
"He took a big step forward [Tuesday]," Texans coach Gary Kubiak said. "He's progressing toward getting ready to go, so it's a positive move forward for him."
Kubiak stopped short of saying Schaub, who has missed five games in each of the last two seasons with injuries, would start against the Jets. He did announce that Rex Grossman would be Houston's No. 2 quarterback this week.
Grossman, who led Chicago to the Super Bowl in 2007, overtook Dan Orlovsky in the competition to back up Schaub after throwing two touchdowns in Houston's preseason finale. Orlovsky, a seven-game starter for Detroit last season, was scheduled to be the backup before Grossman's recent performance that came after he missed two weeks with an injury.
"Matt is hobbled, so they've got to be ready to go," Kubiak said. "But as I told Dan and Rex, I'm leaning toward Rex's experience and the way he handled himself, handled the team the other night. I'm kind of drawing from what I've seen him do in the past and [am] just very comfortable with him right now."
Grossman was excited about the decision, but said it won't change anything he does.
"I've got to prove myself every practice and every time I go out there," he said. "You get graded and you get judged basically every time you throw the football. So I'm still going to have that same sense of urgency."
Walter, who was second on the team with 899 yards receiving and eight touchdowns last season, has a hamstring injury. Wilson was injured by an illegal crackback block delivered by Brett Favre for which the quarterback was fined $10,000.
Another question mark for the Texans is how rookie linebacker Brian Cushing and veteran cornerback Dunta Robinson will perform on Sunday. Cushing missed all four preseason games because of a sprained knee, but is healthy and expected to start at strongside linebacker.
Middle linebacker DeMeco Ryans is confident that Cushing is up to the task, but has been trying to help the first-round pick in the days leading up to his NFL debut.
"I stay on him, always asking him questions to make sure he's into what we're doing, into our game plan and making sure we're both on the same page," Ryans said. "The more me, him and Zac [Diles] communicate the easier it's going to be for all three of us."
Robinson missed all of camp in a contract holdout before reporting on Sunday. He is expected to start.
"The thing that concerns me is they have not all been working together, but it's time to go to work together," Kubiak said. "I think they all understand it too. So the sense of urgency, the attention to detail in getting ready to play, has got to be good anyway but it better be great this week."
Robinson practiced with the team for the first time Tuesday and was encouraged afterward.
"I thought I'd feel a little rusty, but I felt fine, like I had been out there for a while," he said. "I would say it was a good start ... it felt good to be back out there with the fellas and running around a little bit."