DURHAM, N.C. (AP) -- Once again, Duke's "Big Three" made sure the fifth-ranked Blue Devils stayed unbeaten.
J.J. Redick scored 20 of his 28 points in the second half Sunday night to help the Blue Devils beat Virginia 80-66.
Shelden Williams added 16 points, 11 rebounds and a career-best nine blocks for the Blue Devils (13-0, 3-0 Atlantic Coast Conference), who struggled to put away the Cavaliers but still won for the 20th time in 22 meetings. Daniel Ewing added 17 points despite injuring his left ankle late in the first half.
They were the only Blue Devils to score in double figures, the fifth time that has happened this season. But, as has been the case all season, it was good enough for a team that came into the season with just eight recruited scholarship players.
"Our program has known how to win," coach Mike Krzyzewski said. "These kids were in the Final Four, they could've won the national championship last year. Those three guys have been in a lot of ballgames and they've won most of them. They know how to win and they'll step up."
Beating the Cavaliers (9-5, 0-4) allowed Duke to remain one of four unbeaten Division I teams in the country. And it kept the Blue Devils near the top of a league with four teams ranked in the Top 10.
"We expected to be here," Redick said. "We knew we'd have some challenging games early. And really every league game is challenging. It's something we're going to keep working at and we know we have a lot of room to improve."
Sean Singletary scored 19 points to lead the Cavaliers, who fell to 0-4 in the league for the first time since the 1998-99 season, Pete Gillen's first year as coach. Virginia has not won at Cameron Indoor Stadium in 10 years.
The Cavaliers, who shot 35 percent, have lost four of five to fall from the national rankings.
"We took some steps forward," Gillen said. "Now we need to play well and win."
With Duke holding a 34-28 lead at the break, Redick went 6-for-7 from the field and 4-for-4 from behind the arc in the second half to help the Blue Devils gradually increase their lead.
In a three-minute stretch, Redick hit three 3s, two off feeds from
Sean Dockery. Redick closed that run with an excellent move on the wing, spinning away from Singletary and making the shot for a 65-50 lead with 7:55 left.
Redick finished with six 3-pointers and helped Duke to shoot 55 percent in the second half.
"That's J.J.," Ewing said. "He's been doing it for us all season, putting up those type of numbers. Once he gets going, you can pretty much clear it out and let him do his thing."
Williams certainly did his part, providing the rugged complement to Redick's smooth perimeter game. He repeatedly rejected shots by both penetrating guards and post players attacking the offensive glass.
His nine blocks surpassed his previous career high of eight set against Wake Forest last season.
Duke got off to a slow start, trailing by seven early before Ewing got the Blue Devils going. He scored 10 points in the first half, all during a 20-6 run that pushed the Blue Devils to a 30-23 lead.
But the Blue Devils had a scare late in the first half when Ewing went down during a scramble for a loose ball. He was helped to the sideline but returned to play all 20 minutes in the second half.
By then, of course, Redick had found his rhythm.
"Those are three superstar players," Gillen said. "You can argue they're three of the top 10 or 15 players in the country. ... It makes the other players' jobs easier."
Redick's big night was the highlight of a game that featured the return of junior Shavlik Randolph, who missed the past four games with mononucleosis. Randolph had a basket and two blocked shots in five minutes, but his return promises to improve the Blue Devils' shaky depth.
Maryland point guard Melo Trimble, considered a lock to leave the program before struggling in the second half last season, has withdrawn from the NBA draft and will return for his junior season.
Louisville's Chinanu Onuaku, who recently underwent a medical procedure to correct a heart rhythm issue detected during the combine, will keep his name in the NBA draft pool.
Andrew White III will return to the Nebraska men's basketball team next season after removing his name from the NBA draft.