All is well in Krzyzewskiville, as Duke held off a scrappy Santa Clara team and notched a 90-77 victory Saturday. But the Blue Devils have plenty to work on if they want to continue their pursuit of an undefeated season. 

A two-point lead at halftime and a second-half deficit is all you need to know to realize how close this game really was. 

Let's dive in and check out which areas the Dukies should be concerned about moving forward as they get ready to enter ACC play shortly.

Must Shut Down Opponent's Star Player...

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