George Washington 79, Duquesne 57
Kromah hit 8 of 17 off the bench for the Colonials (11-10, 5-3), who rebounded from a loss to La Salle that snapped the team's three-game winning streak.
The win was the 398th for Colonials coach Mike Lonergan.
Derrick Colter paced Duquesne (7-15, 0-8) with 18 points, and Jeremiah Jones added 14.
The Dukes made just 35.1 percent (20 of 57) of their shots, including 9 of 24 from deep, and were outrebounded 47-27.
George Washington opened a 45-35 halftime advantage then started the second half with a 7-1 run for a 52-36 lead with 16:12 left.