Marcus Mariota progressing in new offense

Marcus Mariota is learning yet another offense.
I’ve seen his attention to detail, how much he’s meeting and putting in,” Titans coach Mike Vrabel said, via Paul Kuharsky of paulkuharsky.com.
“He is certainly out in front of trying to [get the offense down] and making sure the relationships with the receivers are where they need to be as far as the route progression and patterns against certain coverages.
“Marcus has had some really good plays and some plays he would like to have back and plays that we’d like to correct.
That’s going to go on through the course of the year.
Nobody’s going to play a perfect game.
I’m not a big percentage guy.” Mariota, the No.
In 40 snaps in three preseason games, Mariota has gone 11-of-18 for 165 yards with two touchdowns and an interception.
“I have no doubt in my mind that it won’t change,” tight end Delanie Walker said.
“We’ve been in what, three different systems with Marcus?