EDEN PRAIRIE, Minn. –Quarterback Sam Bradford has had to learn offenses quickly before, and he's finding his rhythm in Minnesota.

Vikings Offensive Coordinator Norv Turner told media Thursday that Bradford has spent almost "every hour available" working with quarterbacks coach Scott Turner to learn Minnesota's offensive system as efficiently as possible.

"[He's] learning the parts of the system he needs to know to be able to function," Turner said. "This is a benefit, that we had a lot of the game plan done before he got here, so he can start learning parts of the game plan, and I think he has really done a good job with it."

Although **no starting quarterback has yet been announced** for Sunday's season opener at Tennessee, both Bradford and Shaun Hill are preparing this week as if they will be starting.

Turner said the biggest things for Bradford to grasp when joining the team at this point in the season are (1) verbiage of plays and (2) getting caught up with the Vikings personnel.

"I think the verbiage part of it – because he's an experienced veteran – and learning the system and learning the plays is the easier part than getting in sync with the guys on the field on a play-to-play basis," Turner said.

If Bradford is named the starter against the Titans, Turner said it's possible the playbook would be pared down some, in order to focus on the plays Bradford is comfortable with. Fortunately, however, the Vikings aren't relying solely on the quarterback offensively.

"When Adrian [Peterson] is going and playing, we do know that it starts with him," Turner said. "Then we build plays off of that. So, that's the approach we're going to take, whether it's Shaun or Sam."

Shurmur: Bradford has '3 primary elements':When the Vikings decided to trade for Bradford after losing Teddy Bridgewater for the season, they asked tight ends coach Pat Shurmur for his insight on Bradford. Shurmur and Bradford spent two seasons together: Bradford's rookie season in St. Louis and last season in Philadelphia.

"I think he has the three primary elements that a quarterback needs," Shurmur said of Bradford. "He's an outstanding decision-maker, he's extremely accurate and he understands timing. Those are the things you're looking for in a quarterback."

Shurmur said he had a "very strong opinion" about who Bradford is both on and off the field, and he felt the 28-year-old would be a good fit in Minnesota. Now that he's here, Shurmur is doing what he can to support him in the offense.

"He's had to learn a number of offenses in the past few years, and he's picking it up extremely quickly," Shurmur said. "We're going to do things to help him, but for the most part, we've been very impressed with how far he's come in just a few days."

Priefer proud of Jayron Kearse on special teams:When the Vikings drafted safety Jayron Kearse out of Clemson in the seventh round, he didn't have much experience on special teams. Since arriving in Minnesota, however, Kearse has been utilized there in a number of ways, and Special Teams Coordinator Mike Priefer said Kearse has "made a lot of strides."

"I'm proud of where he's come from," Priefer said. "He made some big plays [against the Rams]. That was good for his confidence and good for our football team."

Priefer said Kearse brings a unique skillset to the unit with his 6-foot-4, 215-pound frame. Priefer also said the rookie offers a trifecta of length, speed and intelligence and has a good vision of the field.

"I've got him playing on the wing on punts. He plays the two on kickoffs. He can play on the front line of kick-off returns, which is brand new technique for him," Priefer said. "On punt returns, he can play inside or outside. You know, put him in the vice."

Titans TE Delanie Walker offers unique challenge for Minnesota:As the Vikings defense prepares to face the Titans Sunday, one player that continually comes up in the film room is tight end Delanie Walker.

Vikings Defensive Coordinator George Edwards said Walker is a "jack of all trades" that could be a tough match for Minnesota and requires a lot of discipline by the defense in route progressions.

"He's really good in and out of the breaks," Edwards said. "He's a very integral part of their passing game. We realize that situationally, he shows up in about every situation.

"He's an excellent receiver," Edwards continued. "He understands getting body position underneath and using head fakes and things like that. There's been a lot of good tight ends that have been receiving tight ends […] He's right in there with the mix of all those guys."

Injury reports: The first injury report of the 2016 season was released Wednesday and remained largely unchanged on Thursday.

For the Vikings: Nick Easton (ankle) and MyCole Pruitt (knee) did not participate for a second straight day. Jerick McKinnon (foot) did not participate a day after he was limited. Charles Johnson (quadriceps), Rhett Ellison (knee) and Xavier Rhodes (hamstring) were limited participants. Matt Kalil (hip) and Anthony Harris (shoulder) fully participated for the second day in a row.

For the Titans: Kendall Wright (hamstring) did not participate for a second straight day.