Danny Sumner scored 18 of his season-high 22 points in the second half, leading a William & Mary rally that lifted the Tribe to a 70-65 win over James Madison on Saturday night in the quarterfinals of the Colonial Athletic Association tournament.
The third-seeded Tribe (21-9), which reached the semifinals for the second time in three years, will face Northeastern on Sunday.
William & Mary broke the tournament record of 29 3-point attempts, finishing 11-for-36.
The 11th-seeded Dukes (13-20) had a 20-6 run to lead 26-15 with 6:48 left in the first half and 33-24 at halftime.
The Tribe took a 53-52 lead on Sumner's 3-pointer with 5:04 left. The shot was part of an 16-2 run over 5:27 that gave William & Mary a 63-54 lead with 2:02 left.
David Schneider led the Tribe with 23 points, hitting 6 of 9 treys.
Denzel Bowles led the Dukes with 17 points and 15 rebounds.
