The Jacksonville Jaguars have confirmed that Blaine Gabbert will not play against the Denver Broncos this weekend.
The starting quarterback, who has already been forced to sit out two games this year, sustained a hamstring injury during the loss to the St Louis Rams.
The 23-year-old struggled with a thumb fracture in his throwing hand at the start of the season.
Chad Henne will start for the Jaguars, who are still looking for their first win of the season.