NASHVILLE, Tenn. -- Of all the Tennessee Titans' offseason moves, the team's switch to a new offensive scheme will likely make the biggest impact in how much success they have in 2018.

Titans players arrived back at Saint Thomas Sports Park for Phase 1 of offseason workouts Monday. They were greeted with a completed playbook ready for them to learn and a introductory message from new head coach Mike Vrabel about how he'll run things.

Expectations will vary depending on who you ask, but much of the Titans' success will depend on Mariota's integration in the new offense. It will be a scheme created for Mariota, but Vrabel and his staff purposely haven't put a deadline for when they want it to come together.

"We’re not going to rush. I think that’s a huge mistake that we could make, is try to rush and try to shove a bunch of stuff down their throats," Vrabel said. "We do have two weeks before we have a voluntary mini-camp. That will be my job, to kind of evaluate where we’re at. I don’t want to go out on the field with a bunch of stuff and have them not be able to execute. Whatever we feel like we know, then that’s what we’ll run during the mini-camp."

A big reason for previous head coach Mike Mularkey's exit was Mariota's Year 3 regression. Titans offensive coordinator and first-time play caller Matt LaFleur has a history of getting the most out of quarterbacks and now he's creating a scheme for Mariota.

The Titans' 2018 offense is expected to cater to Mariota's comfort, featuring plenty of play action, movement, tempo, aggression and creative route combinations.

How Mariota relates to LaFleur, quarterbacks coach Pat O'Hara and Vrabel will be important factors of the Titans' offseason.

"The relationship between a coach and a player is critical on all levels. Obviously, we all understand that a lot of that focus is going to be on the quarterback," Vrabel said. "That relationship didn’t get started today. It started the day that I got hired and he pops into town and he says hello, or he’s got this going on, or we’re talking about his brother at Oregon. Whatever may be happening. It takes time and to the point I was trying to make is that you don’t want to rush anything. I told our coaches, we don’t have to jerk the wheel and try to go get to where we want to get to, just today. Today was one day, it was a good step, and it was also important. You don’t want to rush, you know what I mean?"

Mariota has expressed excitement to play under Vrabel, LaFleur and a new scheme in a couple of his media appearances this offseason. He got a taste of the playoffs for the first time last season, and he's anxious to take that next step.

As the Titans seek to elevate Mariota's game on the field, they'll continue to prop him as the standard of their franchise off of it.

Marcus Mariota wouldn't leave our Special Olympics @SOTennessee event until every kid had a catch. #TitanUp pic.twitter.com/Csvh78PpII

— Tennessee Titans (@Titans) April 7, 2018

That much was evident Saturday as Mariota refused to leave their Special Olympics event at Nissan Stadium until every kid caught a pass from him.