The Section 1 champion Knights led by three points on a Tyger Hackett 3-pointer with three minutes left in overtime after the game ended at 59-59 on a Yahanni Bartley free throw with seven seconds left in the fourth quarter to force overtime.
Devonte Banner scored 23 points to keep the Knights in the game through the third quarter
Union-Endicott guards C.J. Krowiak (25 points) and Osama Barwari (23) led the way for the winners, who advanced to the state semifinals at Glens Falls, Saturday, March 15.
Brandon Martin added 18 points and Bartley gad seven for Mount Vernon, who led 49-43 after three quarters but could not hold the lead.
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