The Denver Broncos have signed free agent running back Darius Walker.
Denver announced the deal on Friday.
Walker signed with the Houston Texans as a free agent in 2007 and played four games, rushing for 264 yards on 58 carries and catching 13 passes for 81 yards.
He dressed for five games with the Texans last season but did not play before joining St. Louis' practice squad for a week on Nov. 4. He rejoined Houston's practice squad on Nov. 25, finishing the season with the Texans.