Daniel Hamilton knocked down an open 3-pointer at the buzzer to give St. John Bosco a 62-59 victory.
Duke commit Jahlil Okafor had 24 points and 12 rebounds for Young. He was 10-for-13 from the field and 4-for-5 from the line. Miles Reynolds scored a game-high 25 points for Whitney Young.
Hamilton and Vance Jackson had 19 each for St. John Bosco.
Other scores at the Elite Classic are as follows:
Etiwanda (Calif.) 74, Marian Catholic 68
The Kentucky-bound Ulis had 30 points, seven assists and five rebounds for Marian (4-1).
St. Rita 69, Gonzaga (Wash) 58:
Dominique Matthews 34 points and eight rebounds
Benet 55, Redondo (Calif.) Union 46:
Liam Nelligan scored 16 points, Colin Pellettieri had 14 and Xavier recruit Sean O’Mara added 10 points, 10 rebounds and three blocked shots for Benet.
Normal University 62, Fenwick 57:
Keita Bates-Diop, an Ohio State recruit, had 21 points, nine rebounds and six blocked shots for University.