Richmond led 35-28 at halftime by hitting 7 of 14 3's. The lead was 64-45 on a Davis dunk with 4:34 to play. St. Joe's raced back to cut it to eight with 2:22 to play but the Spiders hit enough free throws -- 21 of 30 overall -- to pull away again.
The Hawks had 70 shots, courtesy of 21 offensive rebounds, but shot 37 percent.
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point guard Melo Trimble, considered a lock to leave the program before struggling in the second half last season, has withdrawn from the NBA draft and will return for his junior season.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.