Elorriaga hit three 3-pointers over the first six-plus minutes of the second half as Boise State used a 19-4 surge to open a 59-44 lead.
The Broncos still led by 14 with 9 1/2 minutes to play before the Golden Grizzlies rolled off nine consecutive points to pull within 69-64 on a 3-pointer by Mondy with 7:51 remaining.
But Marks drove for two baskets as Boise State answered with six consecutive points to push the lead back to 11.
Maryland point guard Melo Trimble has withdrawn from the NBA draft and will return to College Park for his junior season, sources told ESPN.
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.