Leading scorers for the Dark Horses were Maurice Robinson with 11 points; Jalen Banks - 8; Raquan Faison - 7 Albert Deaver - 4, and Michael Boykin - 3.
For Union, Javonte Henry had 6 points and Jawan Newkirk added 5.
Sampson goes to 2-0, while Union drops to 0-2.
Sampson will play at Midway next Monday to begin conference play. Union will be at Roseboro-Salemburg Thursday.