There is still another level the Cleveland Browns, already a league-best, defense can reach. 

Production in the red zone. 

Cleveland ranks 29th in red zone defense, allowing teams to score 66.7 percent of the time. A team with quarterback uncertainty has to be stingy on the other side of the ball. And when teams get in the red zone against the Browns, they score more times than not. 

It feels like splitting hairs for a defense that causes as much havoc as the Browns defense already does. 

Still, it remains true. If the Browns manage to sure up stopping teams in the red zone, the worry regarding offensive turnovers and poor field position would no longer be a concern. 

The loss in Week 8 can be attributed to the defense breaking when it needed to bend. And the same can be said for the loss in Week 4 to the Baltimore Ravens. 

Working in favor of the Browns is the matchup with the Cardinals in Week 9. Arizona traded away Josh Dobbs, and with Kyler Murray still unavailable, the team plans to start rookie quarterback  Clayton Tune. 

If there is any week where the defense can plan its flag, proving it will not allow teams to find efficient production in the red zone, it is Week 9. 

No NFL defense is perfect, but the Browns' defense still has a formidable mountain to climb. 

Browns have 2 players they need to extend as soon as possible

Browns need to make a move to keep these players around.