Guard Brandon Reed pitched in 14 points and four assists, and senior point guard Mfon Udofia had 12 points — all on 3-pointers — with four assists.
Brown and fellow freshman guard Jamel Waters each scored seven off the bench to lead the Hornets, but Alabama State shot just 25 percent (15 of 60), with its starters combining to go 6-for-32 (18.8 percent).
"I'm really pleased with our guys' effort tonight," said Gregory. "We came out with a sense of urgency, which will always lead to good things."
The Hornets have 10 players in their first season with the team, no player within 25 pounds of Carter and just a couple that played who were within 2 inches of his height. The Yellow Jackets have a couple of players taller than Carter.
One, 6-11½ center Daniel Miller, blocked five shots to go along with six points and five rebounds. The other, reserve forward Kam Holsey (6-8½), added 11 points and five rebounds.
Soon after the Yellow Jackets opened a 65-33 lead on a breakaway layup by Marcus Georges-Hunt off an Alabama State turnover, Gregory called time out with 6:52 left in the game.
He soon began deploying walk-ons, and even freshman point guard Solomon Poole, who joined the team Saturday about a week after graduating from North Florida Educational Institute in Jacksonville.
One of the nation's top high school prospects, Poole finished with two points off a pair of free throws banked off the backboard, two rebounds, an assist and three turnovers.
Poole's older brother, junior Stacey, will be eligible to play for Georgia Tech Saturday against The Citadel after sitting out a calendar year following his transfer last winter from Kentucky.
One of the biggest cheers went up with 4:20 left when freshman walk-on guard Brooks Doyle nailed a 3-pointer to give Georgia Tech a 72-39 lead.
Junior forward Jason Morris was not in uniform for Georgia Tech. He's struggling with a foot injury.
Gregory also said that freshman point guard Corey Heyward, the son of late former NFL running back Craig Heyward, who is redshirting after undergoing knee surgery last summer, had a second operation after reinjuring the repaired ligament "in an unsupervised workout."