Sestina hit 4 of 6 3-pointers.
Javante McCoy had 19 points for the Terriers (11-14, 4-8). Max Mahoney added 16 points and 10 rebounds. Tyler Scanlon had 16 points and six assists.
The Bison leveled the season series against the Terriers with the win. Boston University defeated Bucknell 87-80 on Jan. 5. Bucknell plays Lehigh at home on Monday. Boston University takes on Army on the road on Wednesday.