KyKy Tandy scored a season-high 21 points that included a key 3-pointer in a late second-half surge as Florida Atlantic roared back to beat Oklahoma State 86-78 on Thursday in the opening round of the Charleston Classic in Charleston, S.C.Florida Atlantic (4-2) advances to play Drake in the semifinal round on Friday while the Cowboys square off against Miami in the consolation semifinal contest, also Friday.Oklahoma State led by as many as 10 points in the first half before securing a five-point advantage at halftime. The Owls surged back and moved in front with four and a half minutes to play. It was part of an 11-1 run, capped by a 3-pointer from Tandy that made it 75-68 with 2:41 remaining.Ken Evans added 14 points for Florida Atlantic, with Leland Walker hitting for 13 and Tre Carroll scoring 11. The Owls went 35-of-49 from the free throw line as the teams combined for 56 fouls in the game, 33 by Oklahoma State.Khalil Brantley led Oklahoma State (3-1) with 16 points while Robert Jennings added 14 points and 11 rebounds for the Cowboys, who hit one field goal over a 10-minute stretch of the second half while having three players foul out.The Owls were up by as many as seven points in the early minutes and by 13-10 after a layup by Carroll at the 11:32 mark of the first half. Oklahoma State leapfrogged to the front on Abou Ousmane’s layup off a Brantley steal, fell behind again on a 3-pointer by Evans and then responded on a 3-pointer by Jennings to take a 17-16 lead.