Oakland Raiders quarterback Derek Carr is facing an indefinite period on the sidelines after breaking his right fibula during Saturday's NFL win over the Indianapolis Colts.
The Raiders accounted for the Colts 33-25 but not before Carr had to be carted off the field due to a serious knee injury, with the star QB now set to undergo surgery on Sunday.
Carr left the game after being sacked by Colts linebacker Trent Cole, who spun the third-year quarterback around.
"Derek had a break of his fibula, and [will] require surgery," said head coach Jack Del Rio "We're going to try to get it done [on Sunday], and so he'll be out indefinitely.
"Once he's healed and ready to go, we'll go, but until then he'll be healing. It was a good win, but a tough setback to have our quarterback go down like that, unfortunate."
The 25-year-old was trying to scramble away from pressure and Cole grabbed him from behind and twisted him to the turf. Carr grabbed the back of his thigh and motioned to the sideline.
Cole's sack was the first allowed by the Raiders, who held a 33-14 lead at the time of the injury.
Carr was 20-of-28 for 228 yards and three touchdowns. He was replaced by Matt McGloin at quarterback.
The Raiders had clinched a playoff berth last week for the first time since 2002. But they may go into the postseason without their MVP-calibre quarterback.
Oakland are battling the Kansas City Chiefs (10-4) for the AFC West title, which would likely come with a first-round bye.