Temple, the No. 7 seed, advances to face second-seeded Wichita State on Friday in the tourney quarterfinals.
Last year the eighth-seeded Owls were upset by No. 9 seed ECU.
Nate Pierre-Louis made a free throw with 1:01 left to give Temple a 77-71 lead, but the 10th-seeded Green Wave roared back behind two Cameron Reynolds 3-pointers sandwiched around an Alston free throw to make it 78-77 with :37 remaining. Alston was fouled with :16 left and hit both free throws to make it 80-77, and Caleb Daniels missed a 3 with :05 left that would have tied the game. Josh Brown added two free throws with a second left to set the final score.
Obi Enechionyia led the Owls (17-14) with 19 points. Alston added 17 points and dished eight assists and Brown added 15 points, six boards, three assists and two steals.
Reynolds hit 3 of 7 from distance and paced Tulane (14-17) with 22 points. Melvin Frazier added 15 points and Samir Sehic and Ray Ona Embo added 11 and 10 points, respectively.
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