Groves opened the second half with a three-point play, sparking a 22-6 run that stretched the Sooners’ one-point halftime lead to 61-49, their largest advantage of the game. Harkless added seven points during the stretch.
Newton scored 18 points to lead East Carolina (3-1). Brandon Suggs added 14 points and Tremont Robinson-White had 12.
It was the first meeting between the teams, and Oklahoma’s first in the invitational.
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