ENGLEWOOD, Colo. — Though few Broncos players have drawn more attention this offseason than new starting quarterback Case Keenum, the veteran signal caller has spent at least part of the previous few months working on a more private endeavor.

Keenum, a seventh-year player who enters his first NFL season as an unquestioned starter, will soon publish his first book, "Playing for More: Trust Beyond What You Can See."

Following his breakout 2017 season in which he guided the Minnesota Vikings to an 11-3 record as a starter and led an improbable comeback win that's been dubbed the "Minneapolis Miracle," Keenum decided to share an inside look at his NFL journey.

"It's pretty cool," Keenum said Tuesday. "After this past season, I had three or four people approach me about writing a book. I never dreamed that I would possibly be able to author a book, but I had some really good help. Andrew Perloff, who's with 'The Dan Patrick Show,' is helping me out.

"It's kind of the story of me off the field, not just on the field, but why I play, why I do what I do and why I get to stand up here and talk to you guys — be the Denver Broncos' quarterback. It's pretty special to me and I let people in and tell some pretty cool stories that a lot of people may not have heard.

"It's just a blessing. God has been so good in my life. If it encourages and challenges somebody, then I've accomplished something with it."

Broncos Head Coach Vance Joseph has had a first-hand look at several parts of Keenum's journey. The pair spent two seasons together in Houston, including a stretch in 2013 during which Keenum earned the first starts of his career.

"Obviously, it's been some years [since then] and players mature," Joseph said. "Case has been through a lot of ups and downs in his career, and he's had success at a high level, speaking of last year. He's ready for the challenge. He's been a great leader for our football team and having a chance to finally be the guy from Day 1 has been fun for Case. I'm excited for him. He's had a great journey.

"It's going to be a great book, I'm sure, and he'll have a good season for us."

Keenum will release "Playing for More" in September, but the book is now available for preorder on major retail websites.