Mariota's second season ended in Week 16 last year with a fractured right fibula. While he was not yet running full speed at May workouts, he is expected to be ready for training camp. His rookie season ended with a sprained MCL in his knee, and durability looks to be his only issue. After struggling on deep throws as a rookie, Mariota made a big jump in accuracy last year on attempts of more than 20 yards, taking his completion rate from 22.5 percent (33rd) as a rookie to 39.1 percent (15th). His QB rating soared from 50.6 (29th) to 117.4 (4th) on deep throws. Improved line play helped his sacks drop from 38 to 23 despite 66 more dropbacks. A vastly better running game and the addition of WR Rishard Matthews contributed to his growth. Those pieces, and standout TE Delanie Walker, are in place again, and the Titans added speedy 6-3 WR Corey Davis with the fifth overall pick, giving Mariota a playmaker on the outside. Davis could become Mariota's go-to in the red zone, where the QB has thrown 33 TDs without a pick. The 6-4 Mariota is an exceptional athlete with the speed and quickness to make plays with his legs (sixth in QB rushing yards last year), but the Titans could limit his running to avoid exposing him to hits. That's about the only drawback, though, as Mariota looks poised to jump into the top 10 of fantasy QBs.

The second overall pick in the 2015 draft, Mariota found himself under center in Week 1 and stole all the headlines by throwing four TDs before halftime, finishing his debut with a perfect passer rating while only playing three quarters in a rout. It was mostly downhill from there, though, as various injuries limited him to 12 games and unimpressive passing totals. An extremely gifted athlete, Mariota could become the league's most dangerous scrambler not named Cam Newton, and he also has a quick release and excellent footwork, albeit with merely adequate arm strength. That lack of elite arm strength, as well as a lack of elite receivers, led to Mariota posting a poor 58.3 QB rating on passes of 15-plus yards. The question now for 2016 is how much he'll be allowed to do under center. Sacked 38 times —a rate that would have tied Blake Bortles over 16 games as the league's most-sacked QB — Mariota should have better protection after the Titans drafted tackle Jack Conklin eighth overall. The team also traded for DeMarco Murray and drafted Derrick Henry in the second round, and while an improved rushing attack will take significant pressure off Mariota and perhaps keep him healthier, it also signals a shift in offensive philosophy that could limit his pass attempts and fantasy ceiling.

The only knock on Mariota coming out of college — and the biggest reason he was drafted second behind Jameis Winston — is he played in a spread attack at Oregon. Mariota was rarely asked to make multiple reads or throw into tight windows. How long it takes him to adjust to that aspect of quarterbacking is anyone's guess, but he is expected to start Week 1. Mariota is a rare athlete who posted elite marks in drill after drill at the Combine, including a 4.52 40. The 2014 Heisman Trophy winner is the ideal dual-threat QB: both quick and fast, strong-armed, throws well on the run, agile, accurate and intelligent. The Titans said they plan to tailor their offense to fit Mariota's skills. Tennessee's receivers are more steady than explosive, but second-round pick Dorial Green-Beckham has the potential to be a size/speed playmaker right away at 6-5, 237, with a 4.49 40. The 6-4 Justin Hunter provides another big target, and last year's leading receivers, Kendall Wright and Delanie Walker, are reliable, while newcomers Harry Douglas and Hakeem Nicks are savvy veterans who can help.