GREENSBORO, North Carolina (Ticker) -- Daniel Ewing made sure that the streaks continued for 12th-ranked Duke and Virginia.
Ewing scored a career-high 32 points to lead Duke to an 83-76 victory in the Atlantic Coast Conference tournament quarterfinals and a matchup against rival North Carolina in the semifinals on Saturday.
Duke (22-6) has won the last four ACC tournament titles and extended its streak to 13 straight wins in league tournament play.
Meanwhile, Virginia (15-15) lost its ninth straight ACC tournament game, five of them under coach Pete Gillen.
"We gave it our best," Gillen said. "We didn't play our best but we played as hard as we could play."
This marks the first all-North Carolina semifinals in the ACC tournament since 1963. Wake Forest will play North Carolina State in Saturday's first semifinal game.
Duke won both regular season meetings over the Cavaliers by an average margin of 15 points and now has won 16 of the last 18 meetings.
Ewing, a 6-2 sophomore, was the key to Friday's win, converting 11-of-16 shots, including 5-of-7 from 3-point range. The rest of the Blue Devils were 17-of-38 from the field.
"I wanted to be a sparkplug, especially on defense," said Ewing, who had a previous career-high of 19. "That carried over to the offensive end. I was able to put down some shots and make some big plays."
"Daniel was terrific," Duke coach Mike Krzyzewski said. "His toughness and assertiveness was the key to the ballgame. He was talking. You just need one person to start doing that and it is contagious."
Devin Smith led Virginia with 19 points, including four 3-pointers, and Elton Brown added 15 points off the bench.
"I was getting the ball in some good positions coming off screens from my teammates," Smith said. "I was in rhythm tonight and they were falling for me.
The Cavaliers shot 57 percent from the field, but committed 19 turnovers and hit two less 3-pointers than Duke. The Blue Devils shot 52 percent.
"It is frustrating to shoot that well and lose," Gillen said. "We didn't handle their pressure and that was the story of the game. I don't know if we got a little frantic. They turned up the juice. They have great athletes. They smothered us and we didn't have anybody to break down their pressure."
Virginia held a 30-29 lead at the half after shooting 53 percent from the field. There were seven ties and eight lead changes in the half.
But Krzyzewski benched his captain Chris Duhon to start the second half after the junior guard went scoreless with six turnovers in the first half.
"Chris had six first-half turnovers and that is unusual for him," Krzyzewski said. "We didn't communicate real well in the first half and I just wanted to Chris to sit and watch for a little bit and settle down."
The Blue Devils responded, going on an 18-7 run in the first six minutes of the second half. Ewing highlighted it with a 3-pointer and two layups as Duke built a 47-37 advantage.
Duke increased the lead to as many as 13 points, but the Cavaliers fought back and pulled within 63-58. Ewing stopped the momentum with a 3-pointer with 6:03 left.
Despite losing forward Travis Watson, who fouled out, Virginia closed within 73-67 on a basket by Majestic Mapp with 2:21 left.
But Dahntay Jones, who finished with 16 points, hit back-to-back 3-pointers in the next minute to increase the lead to 79-67.
Now Duke will focus on North Carolina, which beat the Blue Devils, 82-79, last Sunday
The rivalry's intensity was displayed in a near-fight that broke out with 8:17 left. North Carolina guard Ray Felton was hit in the mouth by a Duke player and Tar Heels coach Matt Doherty went to check on him.
Duke assistant Chris Collins began screaming at McCants and Doherty attempted to intervene. Players from both teams congregated and seldom-used Blue Devils reserve Andre Buckner gave Doherty a hard shove before the officials stopped the situation from escalating.
"It's going to be a great game," Ewing said of Saturday's semifinal game. "We lost to them so we've got to come out and fight and play a 40-minute game."