The Celtics will play in Group B in the Eastern Conference with four matchups (two home, two away) coming as part of their regular season schedule. Boston will also be in the first NBA matchup televised on Amazon Prime on Oct. 24 when they face off against the Knicks at Madison Square Garden during opening week.

The NBA continued its leak of the full 2025-26 schedule on Wednesday when it released the NBA Cup schedule. The Philadelphia 76ers are in Group B in the Eastern Conference for the third annual in-season tournament to go for the Cup and they now when they need to lock in for group play.

This year, the Sixers are in Eastern Conference Group B for the NBA Cup alongside the Boston Celtics, Brooklyn Nets, Detroit Pistons and Orlando Magic. They will host Group Play games against Boston and Orlando while visiting Brooklyn and Detroit in other Group Play battles. The official schedule is as follows: