There may be a ton of excitement and hype for Arizona Cardinals rookie quarterback Josh Rosen to take over the reigns as the starter in the desert, but it will be Sam Bradford who enters training camp this season as the top signal-caller.

Over the weekend, as reported by Cardinals beat reporter Josh Weinfuss of ESPN, the nine-year veteran Bradford praised the young Rosen for his ability and talent at the quarterback position.

“He's done a great job,” Bradford said of Rosen. “I think I've been impressed just with his ability to grasp things mentally. Coach has thrown a lot at all of us in trying to learn this system. It's tough for a rookie to be able to come in and understand everything that's being asked of him. I think he's done a tremendous job of that, and then physically, he's just really gifted. You can see he can make all the throws. He's got plenty of arm strength to push the ball outside the numbers, to push it downfield.”

The three other quarterbacks on the roster, which includes Rosen, ex-Chicago Bears quarterback Mike Glennon, and undrafted free agent rookie Chad Kanoff, all feel that Bradford is a great teammate and source of information.

“I'm an open book, ask me anything, I'll give you everything that I've got,” Bradford said. “I've gone through quite a bit in my career, just as far as different offenses. I've seen a lot of different offenses, so I feel like I'm fairly knowledgeable in some of the schemes and some of the schemes that we're doing.”

Regardless of whether or not Rosen becomes the regular starting quarterback this season for the Cardinals, he should be prepared to hear his name called at any moment. It is worth noting that Bradford has struggled throughout his entire career with knee injuries.

The No. 10 overall pick in the 2018 NFL Draft will have extra motivation to succeed, as Rosen has a chip on his shoulder after falling a bit in the first round.