December 18, 2020 10:55 pm Brad Stevens: “We're not even close to the group we were in the bubble.” Brad Stevens tells it like it is after tough loss to Nets in the Celtics final preseason game. Celtics Videos 0:37 Joe Mazzulla: ‘Process of winning' remains the same from regular season to playoffs 0:39 Al Horford: Closing out Heat in Game 5 ‘shows growth' for Celtics 2:35 Celtics earn dominant series win over Heat 4:35 Mazzulla – Part Two: Sacrifices and Mindset 0:51 Jayson Tatum: ‘Lazy to say teams can out-tough us'