La Salle 84, George Washington 70
Galloway made 11 of 17 field goals, including 4 of 7 3-pointers, for the Explorers (21-7, 11-4), who have won three straight and seven of their past eight games.
La Salle made 10 of its first 12 shots, including seven treys to lead 29-14.
The Explorers shot 60.9 percent from the field (28 of 46) to eclipse 60 percent for the second time this season and made 12 of 22 from long range.
The Colonials (12-16, 6-9), who have lost four straight and six of seven, shot 55.2 percent (32 of 58), but hit only 1 of 8 from deep.
La Salle's Tyreek Duren added 19 points and Jerrell Wright 16.
Isaiah Armwood led George Washington with 18 points and 10 boards.