The second-year man has the ability to run with the ball as well as pass downfield in the Seahawks' offense, and Gray admits that his side will have to change their style of defense to contain him.
He told ESPN: "When you get a guy that's really good that can pass and run, most guys drop back and the rushers go past him, now you're in trouble, now the coverage is going to break down.
"So you've got to go to more zone, and really you don't want to do those things. You've got to have some other guys that are kind of watching out for him."
The Titans are 3-2 in their season going into week six.