Lacob used to have a minority stake in the Celtics and was part of the ownership when Boston won the most recent of their 17 NBA championships back in 2008.

He bought the Warriors in 2010, and under his ownership, the team have won three titles, in 2015, 2017, and 2018.

But a victory this time around would mean even more to Lacob.

"Boston was very important, and those guys were very helpful. They're friends to this day. Not too close friends, though," Lacob told reporters.

"I want to kill them right now, I'm going, to be honest. I'm very competitive about this, and I'm sure they are, too.

"It's going to be a battle on the court and a little bit of a battle on the ownership level, too. We want to kill each other and we want to win both teams. And they should."

Lacob looks back fondly on his time co-owning the Celtics, however, even if he is set on getting the better of Boston in the Finals.

He added: "It was very important. I think to run any business in life, actually, I think it doesn't even need to be a business, you just kind of need some experience, right?

"You need to be able to do some pattern matching. You need to see what works and what doesn't work.

"In this case, it's the same kind of thing. Boston was an experience for me, as a limited partner, to get to see how an NBA team ran, upfront, in person, and real.

"I got to know people like Danny Ainge, and Doc Rivers was the coach. I've got a ring from 2008, by the way, from the championship.

"Five years, I think it was; it was a tremendous experience with the basketball side and the business side. I learned some things I liked to do the way they did it and things that maybe would be different."