LAS VEGAS, NEVADA - JULY 11: Grayson Allen #3 of the Memphis Grizzlies fouls Grant Williams #40 of the Boston Celtics during the 2019 NBA Summer League at the Thomas & Mack Center on July 11, 2019 in Las Vegas, Nevada. The foul on Williams was ruled flagrant and Allen was ejected from the game. The Celtics defeated the Grizzlies 113-87. 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. (Photo by Ethan Miller/Getty Images)