Private equity mogul William Chisholm agreed to buy the Celtics on Thursday in a deal that values the NBA’s reigning champions and the most-decorated franchise in league history at a minimum of $6.1 billion — the largest price ever for American professional sports team.

If the deal is approved by the NBA’s board of governors this summer, the sale would top the $6.05 billion paid for the NFL’s Commanders in 2023.

A Massachusetts native and graduate of Dartmouth College and Penn’s Wharton School of business, Chisholm is the managing partner of California-based Symphony Technology Group. The new ownership group also includes Boston businessmen Rob Hale, who’s a current Celtics shareholder, and Bruce Beal Jr.

Wyc Grousbeck, whose family leads the ownership group that bought the team in 2002 for $360 million, said Chisholm asked him to stay on as CEO and Governor for the next three seasons, “and I am glad to do so.”

The record price for an NBA team was the $4 billion mortgage firm owner Mat Ishbia paid for the Suns in 2023.

Orioles: After expressing frustration over being cut from the Orioles’ spring training roster Tuesday, top infield prospect Coby Mayo took to social media Wednesday to clarify his comments. “The comments I made yesterday to the media after being optioned were by no means directed to the Orioles Organization or the Norfolk Tides,” Mayo wrote in a post on X. “I will be the first to tell you I didn’t do enough this spring to break camp with the big league team. I was frustrated in the moment and things were taken out of context. As a competitor this has lit a fire in me and I will make sure I work even harder to get back to the big leagues and help the team win games as soon as possible. I will never settle for anything less than the best version of myself.” Mayo, 23, is the Orioles’ No. 2 prospect and the No. 29 overall prospect in the sport by Baseball America’s rankings.

— Matt Weyrich