September 30, 2021 12:43 pm Dennis Schroder: I'm going to compete on the highest level Dennis Schroder shares his thoughts on his recent jersey number change, and explains his mindset in every game, whether as a starting or coming off the bench. 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'