ATLANTA -- Josh Okogie scored 26 points, Ben Lammers had 11 points and 11 rebounds, and Georgia Tech pulled off a major upset with a 75-63 victory over No. 9 North Carolina on Saturday in the Atlantic Coast Conference opener for both teams.

Justin Jackson finished with 16 points and Nate Britt scored 13 for the Tar Heels, who committed a season-high 20 turnovers. North Carolina (12-3, 0-1) never led after Okogie hit two free throws with 11:59 remaining.

In its first season under coach Josh Pastner, Georgia Tech (9-4, 1-0) has the league's youngest and least experienced roster, and the Yellow Jackets didn't beat North Carolina A&T until the closing minutes on Wednesday. North Carolina A&T is 1-12.

Josh Heath scored 15 points and Quinton Stephens had 11 for Georgia Tech. 

The Tar Heels, who lost to Villanova in the national title game last season, had won three straight overall and seven straight in the series, but they shot poorly, missing 21 of 26 3-point attempts and hitting just 33 per cent overall. 

North Carolina had a big advantage in the stands as their fans outnumbered Georgia Tech's about three to one. The Tar Heels gave them few chances to get charged up.