A league source told NFL Network's Albert Breer that the Titans believe Britt tore the medial collateral ligament in the knee, and possibly the anterior cruciate ligament. The prognosis on the wide receiver was "not good," according to the source, and Britt will undergo an MRI exam Monday.
Britt suffered the injury at the end of a short reception near the sideline. His right knee appeared to buckle as he stepped toward the sideline, and it gave way on his next step as he fell to the ground and fumbled the ball. The third-year receiver laid on the ground for a few minutes before being helped to the sideline. He limped heavily, barely able to touch his right foot to the ground. He later was carted off the sideline and didn't return.
Britt limped out of the stadium Sunday wearing a brace over his right knee, saying only, "My status is limping."
"Obviously, it didn't look good when he got hurt," he said. "We might as well wait for tomorrow to find out for sure."
The Associated Press contributed to this report.