Kenny Britt can no longer use his ailing knees as a crutch.

Time is up when the Titans wide receiver can tease with his potential.

Heading into the final season of the five-year contract, it’s put up or shut up.

“Every year is important to me,” Britt said nonchalantly after practice on Friday at Baptist Sports Park. “I am hoping everyone is praying for me to be healthy and to stay healthy. I feel good, and feel I am in the best shape I have been in. I am not too worried about the contract. I am just worried about staying healthy.”

For all those who hoped Britt would get serious this offseason, it appears their wish has been granted. Based on his words, and observations of coaches and teammates, he seems like a different guy.

Since a January incident in New Jersey when police questioned him about a friend being stabbed in a fight — Britt was never a suspect — the oft-troubled wideout has steered clear of trouble. He trained in Pensacola, Fla., and Los Angeles, focusing on himself and getting his knees healthy.

In Friday’s organized team activity, the first one open to the media, Britt ran routes with no signs of struggle.

“Kenny is healthy and he’s doing good. He looks way different,” second-year wideout Kendall Wright said. “He took his offseason serious and went and got his knees right.”

The Titans are counting on big things from Britt. The reality: If he doesn’t deliver, chances are he won’t be back in 2014.

A first-round pick in 2009, Britt appeared headed for a breakout year in his third season. Through two-plus games he had 17 catches for 289 yards and three touchdowns when he suffered a season-ending knee injury in Week 3 of 2011 against the Broncos.

Britt had surgery to repair the ACL and MCL in his damaged right knee, but needed another procedure last May. Then came surgery to repair an issue with the left knee.