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Tony Gutierrez/Associated Press

1. Dak Prescott

2. Kellen Moore

3. Zac Dysert

4. Cooper Rush

For the first time in his NFL career, Dak Prescott will open the season training as the team's starter. While everyone is expecting big things from him in his second year, it should be noted that he isn't the best practice player.

As someone who has seen him in practice, I know Prescott often struggles with accuracy in practice but knows how to turn it on when the lights come on.

I expect there will be concerns about Prescott's accuracy again this season, but there's no need to worry. He is this team's franchise quarterback and without him, this is just another 4-12 team. As training camp approaches, remember that the 23-year-old knows how to turn it up once the games start to matter.

Despite their confidence in Kellen Moore, I wouldn't be opposed to looking for a better backup quarterback at the end of camp for the Cowboys. However, Dallas seems pretty set on keeping just two quarterbacks on their 53-man roster—and they will be Prescott and Moore.

Moore will get a ton of reps in practice, but he just doesn't have the arm talent to be a No. 2 quarterback in the NFL. His lack of arm strength actually hinders practice, as he can't consistently drive the ball on the outside to the receivers. The backup quarterback spot is a real weakness for the Cowboys.

The real competition here will be between Zac Dysert and Cooper Rush for a job on the practice squad.

Dysert has been in the league since 2013, but he has failed to throw a pass in an NFL game and has been on seven different teams.

Rush is the favorite to win that spot because of his accuracy and his size. Look for him to get a ton of reps in the second half of the preseason games.