On some off-days during the Celtics’ run in the NBA bubble, Tatum will receive a call from Irving. “Ky is like my big brother,” Tatum tells The Athletic. “We still talk to this day, and we’ve talked a few times this playoffs. He always encourages me to be special. Having that relationship with him and having somebody like him in my ear at a young age, it means a lot. “You can steal from a lot of different guys — Ky, Kobe (Bryant) — but you have to do it your own way. I’m one of the youngest guys on this team but I know the role I have. I know how these guys view me and they value what I have to say. I want the best for everybody and I just want to win. I’ve been more outspoken this year.”