Robb Diggs led the George Washington Colonials (6-2) with 14 points and six rebounds.
Antonio Flaggs and Loren Leath each had 11 points to lead the Sacramento State Hornets (1-10).
With the Hornets missing 14 of their first 16 shots from the field, the Colonials built up an 18-5 lead after Damien Hollis made a basket with 7:39 left to play in the first half.
The Hornets outscored George Washington the rest of the way, but the Colonials held on for a 32-21 halftime lead. The Colonials made 41.9 percent (13 of 31) of their shots from the floor in the first half while the Hornets shot 17.4 percent (4 of 23).