Cooper Flagg strolled into UNLV’s Thomas and Mack Center at 4:17 p.m. for his Summer League debut, wearing Dallas Mavericks gear, bright white New Balance shoes, and an emotionless look on his face as he passed through security.

Topic found more of a rhythm Thursday, knocking down a pair of threes after struggling with his shot earlier in Summer League play, including a combined 5-for-25 from the field and 0-for-11 from three over games Monday and Tuesday.