"We needed to do our part, too, to help Marcus, to get more pieces," Strunk said.

The Titans have already started to do that this offseason, signing former Buccaneers receiver Adam Humphries and former Rams guard Rodger Saffold.

Mariota, headed into his fifth NFL season, has started 55 games since being drafted second overall by the team in 2015.

In his career, Mariota has completed 1,015-of-1,605 passes for 12,004 yards and 69 touchdowns, with 42 interceptions. His career completion percentage is 63.2 percent, and his career passer rating is 89.4.

The Titans also traded for former Dolphins quarterback Ryan Tannehill earlier this month, and he'll be Mariota's back-up.

"I think that Marcus last year was frustrated with injuries, and we had so many injuries as a team last year," Strunk said. "Who would think Delanie Walker would go out game one?