The 6-6, 185-pound Hairston confirmed the list contains the same teams: Kansas, Michigan, Ohio State and UCLA. Now there appears to be a new team trying to get involved.
"I'd say you can add Oklahoma to that list," Hairston said.
Hairston, the nation's No. 2 small forward and No. 9 player overall according to TheInsidersHoops.com, also said there's an excellent chance he would visit Oklahoma, although a date is not set.
"Yeah I think I am going to visit them," he said. "We'll have to see."
Hairston still says playing time, leadership, as well as competitiveness remain the most important things in his decision, but he also wants to fit in.
"I want to go somewhere where I know I'm going to be taken care of," Hairston said. "I want to be somewhere I can fit in since I'll be away from my family. I'd like to be able to play for a national championship as well, but I just want to also be able to see significant minutes right away."
On the court, Hairston's team, Detroit Renaissance continued to roll on Tuesday, as they defeated Detroit Douglass 79-39 to stay unbeaten. Hairston recorded another triple-double with 14 points. He's now averaging 17.4 points a game and nearly 11 rebounds a game.
Hairston says he still does not have an immediate timetable for a decision. The late signing period begins after the season ends in April.
Hairston enjoyed a fine junior campaign at Renaissance, averaging 22 points, 12 rebounds, six assists and three blocks per game. He then solidified his stock with fine showings at summer camps as well as on the AAU circuit with The Family team.
OSU already has three early period signees -- forwards Matt Terwilliger (6-9) and Jermyl Jackson-Wilson (6-7) and point guard Jamar Butler (6-2) -- in a class that could number as many five players. If Hairston would sign, OSU would certainly end up with a top-10 class this year.