Celtics Summer League standout just showed why he has ‘delusional’ confidence

LAS VEGAS, NV - JULY 18: John Tonje #8 of the Boston Celtics looks to pass the ball during the game against the Orlando Magic during the 2026 NBA Summer League on July 18, 2026 at the Thomas & Mack Center in Las Vegas, Nevada. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2026 NBAE (Photo by Mike Kirschbaum/NBAE