DURHAM - Alison Bales had 16 points and 12 rebounds, and No. 1 Duke pulled away late to beat No. 4 North Carolina 67-62 and finish the first unbeaten regular season in Atlantic Coast Conference history.

Fellow senior Lindsey Harding added 15 points in her final home game for the Blue Devils (29-0, 14-0), who held the Tar Heels without a field goal for 7 minutes down the stretch while outscoring them 9-0 to remain on track for a No. 1 seed in the NCAA tournament.

Abby Waner added 13 points for Duke, which triumphed in what was its tightest home game of the season by far. The Blue Devils, who won each of their previous 13 games at Cameron Indoor Stadium by at least 10 points, couldn't put North Carolina away until the closing minutes.

Ivory Latta led North Carolina with 19 points, but was plagued by the same poor shooting that doomed her team in its previous loss to Duke. Latta finished 6-of-17 from the field for the Tar Heels (27-3, 11-3).

This time, the Tar Heels led twice in the second half, with their final lead coming when Camille Little's 3-pointer from the left wing made it 56-55 with 7:45 left.

But that was nearly it from the field for North Carolina. Duke clamped down on defense and forced the Tar Heels into eight straight misses during a 7-minute stretch.

Harding scored in the lane to put Duke ahead to stay, 57-56, with about 5 minutes left. Waner followed with a layup, and the Blue Devils connected on 5-of-6 from the free-throw line to push the lead to 64-56, their largest of the game.

By the time Latta hit a runner in the lane to make it 64-60 with 37 seconds left, it was too late for the Tar Heels, who enter the postseason having lost two of four after a 25-1 start.

Erlana Larkins added 18 points and 19 rebounds for North Carolina, and Little finished with 12 points.

Joy Cheek had a career-high 14 rebounds for Duke, which is bidding to become the first team to finish undefeated since Connecticut went 39-0 in 2001-02.

The Blue Devils, who entered having clinched the No. 1 seed in the ACC tournament, wrapped up their first sweep of the Tar Heels since 2004 when All-American Alana Beard led Duke to its 12th straight win in the series.

After Beard graduated, Duke went on to lose five straight to its fiercest rival over two seasons, but snapped that slide with a 64-53 win on Feb. 8 when Latta missed 17 of her 20 shots.

Cameron Indoor Stadium, sold out for just the second time for a women's game this season, was packed with the buzz and fervor typically reserved for Mike Krzyzewski's men's team. A group of students camped in tents behind the famous arena in the patch of grass called Krzyzewskiville but temporarily renamed Goestenkorsopolis in honor of coach Gail Goestenkors.

The Duke players appeared to feed off the relentless energy of the "Cameron Crazies," who serenaded the team with chants of "Undefeated!" after the final buzzer sounded.