PHILADELPHIA, PA - MAY 7: Jaylen Brown #7 of the Boston Celtics and head coach Brad Stevens react against the Philadelphia 76ers during Game Four of the Eastern Conference Second Round of the 2018 NBA Playoff at Wells Fargo Center on May 7, 2018 in Philadelphia, Pennsylvania. 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 Mitchell Leff/Getty Images)