Mariota threw for 295 yards and four touchdowns Sunday, helping the Titans rout the Packers 47-25 for their second win in three games.
Tennessee is averaging nearly 34 points a game in that span, something this franchise has never done before in a single season even with quarterbacks named George Blanda, Warren Moon or Steve McNair.
"He's playing well for us right now," Mularkey said. "He knows the things we can't do with the turnovers, but he's the reason we have the chance to put the points up."
DeMarco Murray also ran for 123 yards, including a 75-yard touchdown on Tennessee's first play from scrimmage.