Tannehill could need season-ending surgery after injury, ESPN reports

Sources tell ESPN Dolphins quarterback could rest knee or undergo surgery

Miami Dolphins quarterback Ryan Tannehill walks into the team's facility in Davie hours after injuring his knee during training camp.

DAVIE, Fla. – The Miami Dolphins are fearful that starting quarterback Ryan Tannehill could need season-ending knee surgery, although no decision has been made, ESPN is reporting, citing sources.

Tannehill was injured Thursday on a non-contact play during training camp.

Local 10 News had exclusive video of Tannehill walking into the Dolphins facility in Davie a few hours later with a brace on his left knee, which he injured in a game against the Arizona Cardinals last December. The sixth-year quarterback was walking with a slight limp as he entered the building.

"He's done, I think," a source told ESPN.

Tannehill could decide to rest the knee for six to eight weeks and try to come back from the injury, or he could undergo surgery, which would end his season, ESPN reported.

The 2012 first-round draft pick never missed a game in his career before last year's season-ending injury.

"I feel sorry for him," young Dolphins fan Jayden Nardullo told Local 10 News while watching training camp Friday morning.

Backup quarterback Matt Moore prepares to take a snap during Miami Dolphins training camp in Davie, Florida, Aug. 4, 2017.

Matt Moore is the team's current backup quarterback. Moore went 2-2 while filling in for Tannehill last season.

ESPN is reporting that the Dolphins could turn to free agent Colin Kaepernick or former Chicago Bears quarterback Jay Cutler, who retired after last season.

Kaepernick was the subject of controversy last season by electing to kneel during the national anthem while he was with the San Francisco 49ers. Cutler played for Dolphins head coach Adam Gase, who was his offensive coordinator with the Bears in 2015.