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HOUSTON -- Houston Texans quarterback Case Keenum will start in Sunday night's game against the Indianapolis Colts, coach Gary Kubiak announced Monday.

The decision came despite the fact that former starter Matt Schaub returned to practice after missing the Texans' last game with a sprained ankle and foot.

"[Schaub] is obviously disappointed," Kubiak said. "I wouldn't expect anything else.

"We talked for a long time. He's a competitor. He wants to be the guy in there. I know it's very difficult on him. It's very difficult on me, too."

Keenum was active for the first time in his NFL career two weeks ago against the Kansas City Chiefs. The Texans lost, 17-16, but Kubiak said Keenum's play provided a spark.

That spark was why Kubiak elevated Keenum ahead of T.J. Yates, who entered the season as Schaub's backup.

Schaub struggled prior to the injury he suffered on Oct. 13. He became the first quarterback in NFL history to throw interceptions that were returned for touchdowns in four consecutive games.