"Participating in NBA London Game 2018 is a great opportunity for our players to compete in front of an worldwide audience at the historic O2 Arena", said head coach Brett Brown.
In the end, this is just another regular season game, and the biggest difference this could make is a longer and less comfortable road trip.
"The Boston Celtics have enjoyed a loyal global following for decades, and we welcome the opportunity to connect again with our worldwide fans", Celtics Team President Rich Gotham said in a team release.
"Our events have become an annual opportunity for basketball fans across Europe to come together and share their passion for the NBA", league commissioner Adam Silver said. Philadelphia played a preseason game against Oklahoma in Manchester in 2013.
Managing partner Josh Harris and fellow co-owner David Blitzer happen to be shareholders in another franchise (aside from the Sixers and New Jersey Devils) - and this one plays not too far from where the Sixers will take on the Celtics. "It's especially exciting to have the Sixers face off against the Boston Celtics on Thursday, to be followed by Crystal Palace's Saturday match-up against Burney nearby in South London".
Since 2011, NBA fans in the United Kingdom have had the chance to see the world's best basketball players in action. "We're happy to be returning to London to play our rivals the 76ers in front of London's fans, and look forward to the exciting atmosphere at The O2". Tickets will go on sale in October.