To make room for Iworah on the roster, running back Keith Marshall was waived with an injury settlement.
Early this year, Iworah signed with the Kansas City Chiefs, but was released shortly after the NFL Draft.
Marshall, a seventh-round pick (No. 242 overall) in the 2016 NFL Draft by the Redskins, was plagued by injuries in his two seasons with the team. He ran 4.31 seconds, the fastest 40-yard-dash time at the 2016 NFL Combine.