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GREENSBORO, N.C. (AP) -- Chelsea Nelson scored 15 points and grabbed an Atlantic Coast Conference Tournament record 22 rebounds on Friday and No. 23 NC State upended No. 18 Duke 51-45 in quarterfinals.

The fifth-seeded Wolfpack (24-7) never trailed in the fourth quarter but it wasn't until Kiara Leslie scored a pair of baskets inside sandwiched around a pair of missed 3-pointers by the fourth-seeded Blue Devils (22-8) that NC State had a late two-possession lead.

Leslie's back-door layup off an advanced inbound pass from Aislinn Konig following a timeout made it 49-43 with 20.1 seconds to play. Duke answered with a layup with 9.8 seconds left to keep it at a two possession game and Kaila Ealey added two free throws.

The Wolfpack now tackle top-seeded and fourth-ranked Louisville or Virginia Tech in the semifinals.

NC State only shot 29 percent, going 2 of 17 from distance, and had 14 turnovers.
 
Lexie Brown led Duke with 16 points and Rebecca Greenwell had 13 but the Blue Devils shot just 27.5 percent and had 19 turnovers.

Nelson's rebounds are second on the school list, which is topped by Susan Yow's 27 boards on Jan. 17, 1976, and broke the tourney record, set in 1982, by one. Barbara Kennedy of Clemson had 21 rebounds in the 1981 and 1982 tourneys.

GAME INFORMATION
Score: #5 NC State 51, #4 Duke 45
Records: NC State 24-7; Duke 22-8
Location: Greensboro Coliseum; Greensboro, N.C.
Attendance: 5,613
Duke starters: Odom, Mathias, Faz Davalos, Greenwell, Brown
NCSU Starters: Ealey, Konig, Leslie, Nelson, Maize

NOTES AND HIGHLIGHTS
- NC State forward Chelsea Nelson pulled down an ACC Tournament single-game record 22 rebounds and led the Wolfpack in scoring with 15 points.
- Nelson broke the previous ACC Tournament record of 21 rebounds previously set twice by Clemson’s Barbara Kennedy (first round vs. Wake Forest in 1981 and semifinals vs. North Carolina in 1982).
- Nine of Nelson’s rebounds came on the offensive glass as she keyed the Wolfpack to an overall 47-37 rebounding advantage. The Wolfpack outscored the Blue Devils 26-12 in the paint.
- NC State led by 13 points at the half and never trailed in the final 20 minutes despite scoring just five points in the third quarter and seeing Duke close within one point several times down the stretch.
- Duke redshirt senior Lexie Brown was recognized prior to the game with the Kay Yow Award as the ACC Women’s Basketball Scholar-Athlete of the Year for the second consecutive season.
- Brown, who left the game briefly in the third quarter after being shaken up while pursuing a loose ball, led all scorers with 16 points.
- NC State has won four of its last five meetings against Duke … The teams are even at 1-1 this year following Duke’s regular-season win at Cameron Indoor Stadium in January … The Wolfpack is 7-4 all-time vs. the Blue Devils in the ACC Tournament.
- NC State is now 47-36 all-time in the ACC Tournament and 22-15 in quarterfinal games.
- Duke is 46-33 in ACC Tournament play, including 18-18 in the quarterfinals.

TEAM LEADERS
Duke
Points: Lexie Brown 16
Rebounds: Leonna Odom 9
Assists: Lexie Brown 3

NC State
Points: Chelsea Nelson 15
Rebounds: Chelsea Nelson 22
Assists: Aislinn Konig 5

INSIDE THE BOX SCORE
Halftime: NC State, 31-18
Ties: 1
Lead Changes: 1
Largest Lead: NCSU by 13, 2nd – 0:26; Duke by 3, 1st – 9:13
Duke led for: 1:56
NCSU led for: 36:28
Game was tied for: 1:36