The Cowboys and Texans are getting their rosters ready for Week One. Dallas announced it signed running back Qadree Ollison and center Dakoda Shepley to its practice squad. Meanwhile, Houston inked tight end O.J. Howard on Thursday, according to the NFL Network. The Texans also placed Teagan Quitoriano, Tavierre Thomas and Christian Harris on injured reserve, while signing Chris Conley, Royce Freeman and Isaac Yiadom to their 53-man roster. Houston opens Week One against the Colts, while the Cowboys face the Buccaneers in their opener.