Cleveland Browns head coach Kevin Stefanski confirmed that wide receiver Jakeem Grant Sr. suffered a "significant knee injury" in the team's 33-32 loss to the Kansas City Chiefs on Saturday.
Grant was injured on the opening kickoff. Trainers placed an air cast on his right leg and carted him off the field.
While the full extent of his injury is unclear, the 30-year-old is all but assured of missing Week 1, and his status for the entire season could be in serious doubt.
Grant is in the second year of the three-year, $10 million contract he signed with the Browns.