Marcus Mariota: Gruden QB camp

Marcus Mariota could be among the first few players taken in the NFL draft. Over the next six weeks, teams will talk to Mariota, evaluate his skills and try to determine whether he should be the face of their franchise.

But first, Mariota will get his turn with "Monday Night Football" analyst Jon Gruden, who figures to put the 2014 Heisman Trophy winner through the ringer of video study and passing drills.

Gruden will meet with Mariota and four other quarterbacks during the sixth season of “Gruden’s QB Camp,” which debuts Tuesday, April 7, at 7 p.m. ET on ESPN2. A preview of Mariota’s time with Gruden will air on "SportsCenter" on Monday at 6 p.m. ET.

To prepare you for the show, we break down Mariota’s greatest strength, his main area of improvement in his final season and a cause for concern.

Greatest strength: efficiency

Mariota finished his career at Oregon as the most efficient player in FBS history. Of the 180 players to gain at least 9,000 career yards, no one averaged more yards per play than Mariota’s 8.7.

Mariota was also unfailingly accurate. He completed at least 58 percent of his passes in every game last season.

Five FBS players finished their careers with at least 100 touchdown passes and fewer than 30 interceptions. Mariota’s touchdown-to-interception ratio (105-14) is by far the best among that group.

Mariota’s 1.2 percent interception rate (14 interceptions in 1,167 attempts) is an NCAA record (minimum 1,050 passes), breaking Geno Smith’s mark of 1.4 percent.

Mariota showed a nice touch on long throws. He completed 54 percent of his passes thrown at least 15 yards downfield, the highest percentage among Power 5 quarterbacks and 16 percentage points better than the Power 5 average.

Mariota posted 21 career games at Oregon with a Total QBR of 90 or higher, including an FBS-high nine last season -- the most in one season by any player in the past 10 years.

Biggest improvement: passing against the blitz

Mariota improved considerably against the blitz from 2013 to 2014. His completion percentage went from 59 percent to 72 percent, his touchdowns increased from 10 to 13, and his 20-yard plays more than doubled from six to 14.

Cause for concern: needs to adapt to NFL style of play

The two biggest concerns you’ll hear about Mariota are that his performance is a product of Oregon’s system and that he’ll have a big adjustment to make in the pros.

Mariota has taken 99.5 percent of his snaps from a pistol or shotgun formation in his career.

In the NFL last season, 60 percent of plays came from a pistol or shotgun look (though the Philadelphia Eagles, who could trade up for Mariota, ran pistol or shotgun 84 percent of the time).

Mariota threw 64 percent of his passes off play-action, a higher percentage than any other NFL quarterback. That’s nearly three times the rate at which an average NFL quarterback threw play-action passes.

Earlier profiles: Brett Hundley, UCLA Bruins