Marcus Mariota, Julio Jones, and Dalvin Cook highlight the list of players suffering injuries during the early slate of games Sunday.

Minnesota Vikings running back Dalvin Cook injured his knee against the Detroit Lions.

The rookie was injured on a non-contact play and had to be helped to the sideline.

Cook had 13 carries for 66 yards and a touchdown before leaving the game.

UPDATE: According to the NFL Network's Ian Rapoport and Tom Pelissero, the initial diagnosis is that Cook has a nearly complete tear of his ACL.

Tennessee Titans quarterback Marcus Mariota injured his hamstring against the Houston Texans.

According to a report from Ian Rapoport of the NFL Network, Mariota is listed as questionable to return with a hamstring injury. Mariota was 6/10 for 96 yards and two interceptions at the time of his injury.

Matt Cassel replaced Mariota behind centre.

UPDATE: According to ESPN's Adam Schefter, Mariota will undergo an MRI on his hamstring tomorrow.

Atlanta Falcons wide receiver Julio Jones left Sunday's game against the Buffalo Bills with a hamstring injury and will not return.

The Falcons also lost receiver Mohamed Sanu against the Bills.

Jones had three catches for 30 yards and the time of his injury, Sanu had one reception for three yards.