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.

In his opening NBA action, top pick Cooper Flagg struggled against the Los Angeles Lakers. It had been a forgone conclusion he’d take the court for the Mavericks for months, with the team having landed the No. 1 overall pick in mid-May with just a 1.8% chance. But his debut likely didn’t go the way he planned.

The No. 1 overall draft pick faces off against Bronny James and the Lakers in Summer League with broadcast available on ESPN and multiple streaming platforms.