NASHVILLE, Tenn. -- Rookie quarterback Marcus Mariota looked composed and was mostly mistake-free in his first training camp practice leading the Tennessee Titans.

Between seven-on-seven work without lines and 11-on-11 team work, he was 13-of-18 and didn’t throw an interception.

He spoke Thursday before camp opened and will speak to the media again Sunday after the team’s first practice in pads.

His teammates offered the same sort of solid reviews they offered during organized team activities and minicamp.

"You could tell he was training this offseason, really in the playbook," tight end Delanie Walker said. "He called the huddle with poise, said the plays like he knew them, ran the offense very well. That’s exciting to see when you’ve got a young quarterback coming in and ready to go."

Twice Mariota was able to use a hard count to get the defense to jump offside.

Before any defenders were involved when quarterbacks were simply throwing to receivers, Mariota launched a beautiful spiral 40-yards to Justin Hunter in stride.

Later, one of his misses was high off the hand of giant rookie receiver Dorial Green-Beckham and another couldn’t be corralled by diving running back Dexter McCluster at the right sideline.

Dexter McCluster didn't pull this in from Mariota. #Titans pic.twitter.com/tasUev0UOl — Paul Kuharsky (@PaulKuharskyNFL) July 31, 2015

Kendall Wright is clearly the top receiver and Hakeem Nicks got the bulk of the work opposite Wright. But the second snap of many series featured two new guys, including Harry Douglas, Hunter and Green-Beckham.

Some highlights from the opening practice. Check out my Instagram for some pictures and videos: