Aditya Mittal joins the Celtics' ownership group with a huge investment. Learn how this shapes the team's future in the NBA.

Who will be calling the shots for how the team is run in the short term, especially given the hefty payroll and tax soon to come with Tatum hurt?

The Celtics’ ownership transition was first announced in March, when William Chisholm’s group agreed to buy the team in a two-part transaction.

I think I need to be very hands on in periods of transition. “But (then) you have to let people do their jobs.” Knocks ...