Vikings wide receiver Adam Thielen underwent season-ending surgery on his left ankle on Tuesday and will miss the remainder of the '21 regular season, the team announced on Wednesday afternoon. The move was first reported by Chad Graff of The Athletic.
Minnesota placed the 31-year-old on the injured reserve list on Wednesday.
Thielen, who played in the Vikings’ game against the Rams on Sunday, previously missed Minnesota's last two games—against the Steelers and the Bears—with a sprained left ankle. However, the two-time Pro Bowler re-injured his ankle on Sunday, finishing the game with three catches for 40 yards in the Vikings’ loss.