Buy or Sell: Celtics & Mavericks

As Luka Doncic, Jayson Tatum and Jaylen Brown continue their All-NBA-caliber seasons, Brian Windhorst, Tim MacMahon and Tim Bontemps discuss whether the Mavericks and Celtics, respectively, should go all in this season. Plus, more on the worst coaching job in the NBA (39:30) and Zion Williamson's interior scoring prowess. Learn more about your ad choices. Visit megaphone.fm/adchoices