Vaughn carried the ball four times for 11 yards and caught his only target for six yards in Sunday's loss to the Saints.
The second-year player continues to mix into the backfield behind Rico Dowdle and Ezekiel Elliott, but Vaughn has yet to find much running room, as his six-yard reception Sunday is his longest gain of the year so far. Should Dallas decide to elevate Dalvin Cook from the practice squad at some point, it could be Vaughn who loses his spot on the game-day roster.