Davis signed with the Cowboys' practice squad Wednesday, Jon Machota of The Athletic reports.
The Cowboys opted to keep Deuce Vaughn on the initial 53-man roster behind Ezekiel Elliott and Rico Dowdle. Dallas also signed sign Dalvin Cook to the practice squad Wednesday, and he could be added to the active roster ahead of Week 1. Davis will have a chance to be elevated to the game-day roster should any of the aforementioned running backs miss any time.