The Duke basketball machine is expected to keep rolling in the 2013-14 college basketball season.

The Blue Devils will likely enter the season ranked in the top 10 in the polls and be viewed as a favorite to reach the 2013 Final Four. It will be one of the deepest and most versatile teams Mike Krzyzewski has had in Durham in quite a while.

But the 2013-14 Blue Devils will not be invincible or unstoppable. Although the team projects to be very strong, it will still have some potential chinks in the armor.

The following list looks at the five biggest things that should worry Duke fans.

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