Smith fell to the ground while attempting to make a block on linebacker Leighton Vander Esch after getting hurt on a running play.
Initial testing revealed that his left knee's ACL was intact, and he was able to walk to the locker room without any support.
After practise, Smith was seen leaving the locker room and didn't have a limp.
The topic of Smith's injury predominated Thursday's Blue Carpet Season Kickoff ceremony at Ford Center.
Because he believed Smith's injury to be a twisted knee on Wednesday night at practise, Dak Prescott expressed regret for not providing more comfort.