Smith (knee) doesn't have an injury designation for Sunday's contest against the Broncos, Dan Salomone of the Giants' official site reports.
Both Smith and veteran TE Kyle Rudolph (foot) were limited in practice this week, only to be cleared for Week 1 action. Meanwhile, Evan Engram, the team's No. 1 at the position, won't be out there due to a calf injury. As a result, Rudolph and Smith will be the Giants' primary tight ends Sunday, with the potential for one of Ryan Izzo, Chris Myarick or Jake Hausmann to be elevated from the practice squad.