Luke Fabrizius made two free throws with six seconds left as Dayton survived a furious second-half rally to upset No. 20 Xavier 68-67 in the Atlantic 10 quarterfinals Friday at Boardwalk Hall in Atlantic City, N.J.

Dayton (21-12), the ninth seed, led 54-37 with 12:23 left after consecutive 3-pointers by Paul Williams and Fabrizius. But top-seeded Xavier (24-7) roared back to take a 67-66 lead with 25 seconds left before having its nine-game win streak snapped. A-10 Player of the Year Tu Holloway (23 points) missed a 3-pointer at the buzzer for the Musketeers.

Chris Wright led Dayton with 16 points and Chris Johnson added 12 points and 10 rebounds. Williams contributed 11 points and Fabrizius 10 for the Flyers, who lost twice to Xavier in the regular season. Mark Lyons added 14 points for Xavier.

Dayton scored the game’s first nine points and led 21-3 just 7:18 into the game. The Flyers made 14 of 26 from the field, 4 of 8 from 3-point range, and out rebounded the Musketeers 17-8 in the first half. Xavier steadied a bit, getting 10 points from Holloway, and crept back within 36-27 at halftime.