W.R. Johnson out with hamstring injury

HOUSTON (AP) - Texans coach Gary Kubiak says All-Pro receiver Andre Johnson will be out for an unspecified amount of time after undergoing a minor procedure to repair a right hamstring injury.

Kubiak would not put a timetable on Johnson's return after Tuesday's procedure.

Johnson went down in the second quarter of Sunday's 17-10 win over Pittsburgh. He rejoined his team on the sideline in the fourth quarter, without crutches.

The Texans (3-1) play Oakland (2-2) on Sunday. The 6-foot-3, 226-pound Johnson missed three games last year with a sprained right ankle, including a 31-24 win over the Raiders.

The five-time Pro Bowl selection sat out seven games in 2007 with a left knee injury that required offseason surgery. The Texans went 2-5 without him that year.