Duke vs. N.C. State final score: 3 things we learned in the Wolfpack's huge upset

Raleigh, North Carolina is only a 25-minute drive from Duke's campus, but PNC Arena has become a living nightmare for the Blue Devils. In its first game at the arena since losing in the NCAA Tournament to 13-seeded Mercer in March, Duke fell 87-75 to N.C. State. It ends a perfect 14-0 start by coach Mike Krzyzewski's team.

N.C. State was led by Trevor Lacey, the 6'3 junior guard who sat out last season after transferring from Alabama. Lacey was incredible before exiting with cramps with three minutes left, finishing with 21 points on 8-of-13 shooting from the field and 5-of-7 shooting from deep. Ralston Turner added 16 points with all four of his field goals coming from three-point range.

N.C. State blew open the game midway through the second half to take a 19-point lead with just over five minutes remaining, but Duke would respond with a run of its own. The Blue Devils got the deficit down to eight points, but didn't have enough firepower to complete the comeback.

Beejay Anya was great off the bench for N.C. State, finishing with 14 points and four blocks. This dunk helped seal the win for the Wolfpack.

Duke was led by 23 points by Jahlil Okafor in the loss. Here are three things we learned:

1. ACC play is going to be tough as hell

Kentucky's quest for an undefeated season has been the most talked about storyline in college basketball thus far. Why haven't Duke (or Virginia) gotten as much attention for unblemished starts? Mostly because the thought of completing a perfect run in the ACC is unfathomable.

The ACC has always been in the mix as the country's best basketball conference, but it's only gotten more murderous with the additions of Louisville and Syracuse. From Jan. 17 to Feb. 7, Duke plays a stretch of seven games against five ranked teams, with four of those five meetings coming on the road.

Duke was going to lose inevitably, no matter how brilliant Jahlil Okafor, Tyus Jones and Justise Winslow. N.C. State just accelerated that process.

Part of the reason no one has talked about the possibility of Duke going undefeated while

2. Duke is still extremely dependent on the three ball

The Blue Devils have the most dominant low post scorer in college basketball in Jahlil Okafor, but that doesn't mask the fact that Duke still lives and dies by the three-pointer. Part of that is because Duke is really good three-point shooting team: entering Sunday, the Blue Devils were shooting 39 percent on threes for the season and were taking a three-pointer on over 35 percent of their attempts.

On Sunday, the shots weren't falling. The Blue Devils shot only 38.1 percent from the field and made only 7-of-26 three-pointers. N.C. State finished with 10 blocks on the night and limited Duke's ability to get off clean looks. Is there's a formula for beating Duke, it starts with not letting them bomb from deep.

3. The Wolfpack are coming together

N.C. State has some not-great losses already, falling to Purdue, Cincinnati and a good Wofford team out of the Southern. The Pack played really well in a 10-point loss to Virginia this past week, and it's clear that the confidence that comes hanging with an undefeated team rolled over into this matchup with Duke.

T.J. Warren is gone, but the Wolfpack still have a lot of talent. There was a time when Trevor Lacey was one of the bigger recruits in the country for Alabama, and his decision to transfer to Raleigh is a big coup for Mark Gottfried. Ralston Turner has made serious strides this season as well, and the ability to bring a defensive monster like Beejay Anya off the bench is a major luxury.

The ACC is going to be as tight as ever, but a team like N.C. State seems like it has the ability to compete against anyone.