Patriots WR Malcolm Mitchell underwent surgery on his knee on Monday, according to the Providence Journal's Mark Daniels. It's presumably the same right knee that he injured late in 2016 and caused him to miss the entire 2017 season. Now Mitchell's 2018 campaign "looks to be in jeopardy," Daniels writes.
Update: The procedure on Mitchell's knee was "aimed at hoping to accelerate healing," according to NFL Network's Ian Rapoport.