Celtics What to know about the Celtics’ summer league team: See the roster, schedule, and more Longtime Celtics assistant Matt Reynolds, a Lexington native, will coach Boston’s summer league.

The Celtics will tip off the 2025 NBA Summer League on Friday against the Memphis Grizzlies. Four of the Celtics summer league schedule games have been scheduled with the fifth game to be determined.

Both squads played with makeshift rosters in their final Summer League contest, and the Celtics definitely looked like the more invested team throughout all four quarters. Boston already owned a 27-20 lead after one, which was also the only quarter where Atlanta was ahead, albeit by a mere two points.

One of the Boston Celtics’ newest additions to their roster Hugo González has not impressed NBA insider John Hollinger in his Summer League games with the organization.

JD Davison had a heck of a season in the G League, but the Celtics waived the guard to dip back under the NBA's second apron.

LAS VEGAS – Jordan Walsh delivered 17 points to lead the Boston Celtics to an 87-78 win over the Los Angeles Lakers in the NBA 2K26 Summer League at Thomas and Mack Center on Thursday evening.

Just before Summer League got underway, the Boston Celtics brought in big man Charles Bassey. This proved to be a smart decision, as he shined for them in Las Vegas. Across the three games he appeared in, Bassey averaged 15.3 PPG, 11.0 RPG, and an impressive 2.0 BPG.

Since bowing out in the second round of the playoffs to the New York Knicks, a lot has changed for the Celtics. Jrue Holiday, Kristaps Porzingis, and Luke Kornet are all on different teams. Al Horford is unlikely to return, and Jayson Tatum will miss all of next season due to a torn achilles.