The victory was the 10th in a row for the Bison (18-6, 8-0 Patriot League), including a 75-59 win at Army on Jan. 7, and it was their 18th straight over conference opponents.
Bucknell shot 70.8 percent (17 of 24) in the first half and led 42-34 at halftime, but didn’t gain control until the final 8 1/2 minutes. The Black Knights (10-13, 3-5), the last Patriot League team to defeat Bucknell, on Jan. 29, 2011, tied the game four times in the second half.
Cohen’s three-point play started a 12-3 run that gave Bucknell a 69-59 lead with 4:06 remaining.
Mike Muscala added 16 points, Bryson Johnson 14 and Cameron Ayers 12 for Bucknell.
Julian Simmons led Army with 15 points, Josh Herbeck had 14 and Ella Ellis 13.