HOUSTON — The Texans have placed running back Ahman Green on season-ending injured reserve after he hurt his left knee against Cleveland.

The 31-year-old former Green Bay star was injured in the third quarter of Sunday's 16-6 win over the Browns.

Green had had 294 yards and a 4-yard average in eight games this season after gaining 260 yards and averaging 3.7 yards while missing 10 games last year.

Steve Slaton has emerged as Houston's go-to back. He has 774 yards and six touchdowns, one more than Green had in two seasons after signing a four-year, $23 million contract.

Because Slaton has a severe chest bruise, and backup Ryan Moats is nursing an injured ankle, the Texans signed former Darius Walker from their practice squad. Linebacker Justin Roland was released to make room.