Backup Luke McCown came in with 8 minutes left in the second quarter. He finished with 118 yards and two touchdowns.
Schaub was sacked by Cameron Jordan when he manhandled Derek Newton on third down on Houston's next possession and the Texans settled for a 48-yard field goal from Randy Bullock.
The Texans don't have a lot of experience at receiver behind Johnson, an 11-year veteran. But Kubiak has been impressed by the development of Lestar Jean, who had 36 yards receiving Sunday, and Keshawn Martin, who finished with 10. The group is also expected to get a boost this season from first-round draft pick DeAndre Hopkins, who missed Sunday's game after sustaining a concussion last week.

Johnson didn't play in the preseason opener and had less than a quarter of work last week. On Sunday, he grabbed seven of the eight passes thrown to him,Authentic Jerseys From China, highlighted by a 39-yard reception.
Andy Tanner had 33 yards receiving with two touchdown receptions in the second half for New Orleans.
"He looked very good," Kubiak said of Tate. "He's been our one healthy veteran back. I think Ben's ready. I think he's going to have a really good year."
HOUSTON (AP) ? Andre Johnson was in midseason form, and the rest of Houston's young receiving group looked pretty good, too.
NOTES: Houston tight end Garrett Graham injured his hip, but Kubiak said he should be OK. ... Johnson's 131 yards receiving were the second-most in a half in Houston preseason history. ... Ingram and Thomas combined for just 43 yards rushing, but added another 79 yards receiving.
"We just try to make the best of the opportunities," Johnson said. "We got a lot of opportunities in the first half of the game. I just did what I could."
The Saints couldn't get much going on offense in their first two drives. Willie Jefferson got his hands on Brees in the end zone on the third play of their first drive. But before he could bring him down,Cheap China NFL Jerseys, the quarterback got off a pass that fell incomplete.
But New Orleans' backups scored two touchdowns in the second half to help the Saints to a 31-23 victory.
Houston played without defensive end Antonio Smith, who served the first game of a three-game suspension for hitting Miami guard Richie Incognito with the Dolphins player's helmet last week.
Smith ripped the helmet off Incognito's head, then hit Incognito on the shoulder with it Aug. 17. Fellow Houston defensive end and the 2012 defensive player of the year J.J. Watt also sat out for the Texans.
Martin returned the punt for a touchdown, but it was called back because of an illegal block by Brandon Harris.
Stills grabbed a 40-yard pass over Kareem Jackson on third-and-6. Stills finished the drive four plays later when he beat Johnathan Joseph to get wide open on the end zone for a 14-yard touchdown reception to put New Orleans up 17-13,Supply Cheapest Air Max.
Johnson had 131 yards receiving before halftime in his first extended work of the preseason Sunday against the New Orleans Saints.
McCown's first drive ended with a 51-yard field goal by Garrett Hartley that cut Houston's lead to 13-10,Wholesale Cheap Jerseys.
Quarterback Matt Schaub raved about the group and said he has "total confidence" in the young players.
Brees found Pierre Thomas on a short pass and linebacker Joe Mays was there to make the tackle, but Thomas wriggled free and dashed for a 51-yard touchdown dash to cut the lead to 10-7 early in the second quarter.
Harris was called for his second costly penalty of the game on a 40-yard pass interference call on the first play of the second half. New Orleans took advantage of the penalty when McCown found Tanner for an 8-yard touchdown strike to make it 24-16.
"I'm getting more comfortable and getting more used to being out there," Stills said. "It's about playing football and having fun, and that's really all it is."
"I felt like we were just kind of hitting our stride when a couple of us got pulled," Brees said.
Tate got another start despite Foster returning to practice this week for the first time since May after dealing with calf and back injuries. Kubiak has said that Foster could start in Houston's opener Sept. 9 without getting a preseason snap.
With Marques Colston still sitting out with a left foot injury,Wholesale Jerseys Free Shipping, rookie fifth-round pick Kenny Stills continued to impress with 54 yards receiving and a touchdown.
T,NFL Jerseys Wholesale.J. Yates threw an 11-yard touchdown pass to Alec Lemon to get Houston to 24-23 late in the third quarter. Tanner's second touchdown grab pushed the Saints' lead to 31-23 in the fourth.
Johnson beat his coverage and was wide open for the 39-yard reception in the second quarter. Schaub was sacked after that and Houston's offense stalled before Bullock made it 13-7 with a 55-yard field goal.
Tate piled up 51 yards on Houston's second drive, with the highlight coming on a 39-yard run when he darted to the outside and cut back in for the big gain. He capped it with a 1-yard run that gave Houston a 7-0 lead.
The Saints got that drive going on another catch and run when Brees finessed a short floater to Mark Ingram which he turned into a 29-yard gain.
"We moved the heck out of the ball, we've just got to score more points and be better in the red zone," Kubiak said.
Drew Brees was four of six for 104 yards and a touchdown for the Saints (3-0) before sitting down after the third possession.
Schaub was 15 of 26 for 213 yards for Houston (2-1), and Ben Tate ran for 74 yards and a score filling in for Arian Foster.
Brees was sacked by Jared Crick to force a punt and end the next drive. The Saints finally started clicking after that.
"When we sit down and game plan I try to figure out ways to get Andre the ball," coach Gary Kubiak said. "It's a compliment to the other guys that Andre's able to get the ball so much."