In a highly anticipated NBA summer league matchup, Bronny James played great defense against No. 1 overall pick Cooper Flagg

LAS VEGAS (AP) — Cooper Flagg strolled into UNLV’s Thomas and Mack Center at 4:17 p.m. on Thursday, wearing Dallas Mavericks gear, bright white New Balance shoes, and an emotionless look on his face as he passed through security.

No. 1 overall pick Cooper Flagg didn't shoot the ball well, but he was able to impact winning in a big way for the Dallas Mavericks in their Summer League opener. The performance didn't come without some jitters that Flagg says he has gotten through after his debut.