Senior Chris Rix is FSU's starter.
That's not an issue.
Sexton, however, wants to prove to the coaching staff that he's ready to perform when needed this upcoming season.
With the departure of Fabian Walker to Valdosta State, Sexton is the only other scholarship quarterback in the Seminoles camp.
Sexton, a redshirt sophomore from Tallahassee Leon High School, says he feels comfortable with FSU's playbook.
"I spent a lot of time in the film room the past few months," Sexton said. "I know the offense and feel comfortable with it.
"I know this is a big chance for me to prove to the coaches that they can rely on me, that I am ready to perform."
Sexton also is looking to improve on his first week, where he missed some passes that he normally completes due to a sore arm.
"This is not a pressure year for him because his time has not come yet," Bowden said.
"It is a very important one not only for him but for the team because you would hate to think you are going into the season with one quarterback that is ready to roll and nobody else is ready to roll."
Sexton also has added nearly 15 pounds of muscle since last season is up to 210 pounds. A lingering back injury, suffered in high school, has finally cleared, Sexton said.
"I've been able to finally do squats and I am getting much stronger in the lower body -- adding muscle to my legs," Sexton said.
"But I am feeling good. I want the coaching staff to have confidence in me that I can lead this team if called upon."