Hoyer was named the team's starting quarterback, winning the job over rookie Johnny Manziel.
"We have his back. We didn't go with him and just say, 'Hey, listen. We might do this and see how it goes and after a series, we might switch it back.' I don't think you can do that -- I know you can't do that at quarterback. ... It's not going to be a quick hook." Pettine said, according to NFL.com.
Pettine said he told Hoyer the Browns are his team and they have his back, but acknowledged a change will be made if Hoyer is not getting the job done.
"You have to produce or there will be a change made," Pettine said. ''But I don't think he's going into this game feeling that."
The Browns start the season Sunday on the road against the Pittsburgh Steelers.
- Scooby Axson