Thielen left Sunday's game against the Rams due to an ankle injury.
At the end of his second catch of the game, Thielen was tackled by his ankles and was visibly frustrated as he got to his feet and assisted off the field by team trainers. There's a chance he aggravated the high left-ankle sprain that forced him to sit out Weeks 14 and 15, and if he's unable to return, he'll finish Week 16 with 33 receiving yards.