Dickerson, who was 7 of 13 from the field, has posted four double-doubles in four games this season. Three other Dons finished in double digits. Tim Derksen scored 18 points. De'End Parker had 16 and Cody Doolin added 14 points and seven assists.
San Francisco led 30-24 at halftime and stayed in front in the second half. The Dons (4-1) shot 50 percent from the field for the game, increasing their winning streak to four games. The Grizzlies (3-3) shot 37 percent from the field for the game.
Jamar was 7 of 13 from the field in his double-double performance, adding 10 rebounds to his 21 points. Jordan Gregory scored 14 points and was 7 of 8 from the free throw line. Mike Weisner added 12 points, shooting 3 of 3 from 3-point range.
Maryland point guard Melo Trimble, considered a lock to leave the program before struggling in the second half last season, has withdrawn from the NBA draft and will return for his junior season.
Louisville's Chinanu Onuaku, who recently underwent a medical procedure to correct a heart rhythm issue detected during the combine, will keep his name in the NBA draft pool.
Andrew White III will return to the Nebraska men's basketball team next season after removing his name from the NBA draft.