BOSTON -- On Tuesday night, the Atlanta Hawks rallied from a 15-point second-half deficit to edge out the Boston Celtics 117-116 in their NBA Cup opener. The Celtics struggled offensively, with Joe Mazzulla pointing out that Monday's offensive issues cost Boston a home game where they were 15.5-point favorites against a Hawks team they had defeated just a week earlier—and that was missing Trae Young, among others. CLNS Media's Bobby Manning and Noa Dalzell examine whether the Celtics might be dealing with a championship hangover.  CLNS Media is Powered by: 💰 Prize Picks - https://prizepicks.onelink.me/LME0/CLNS Download the app today and use Code CLNS when you sign up & Get $50 instantly when you play $5! 🎫 Gametime - https://gametime.co Take the guesswork out of buying NBA tickets with Gametime. Download the Gametime app, create an account, and use code CLNS for $20 off your first purchase. Download Gametime today. Terms apply. What time is it? Gametime! Learn more about your ad choices. Visit megaphone.fm/adchoices