Boston will face the Miami Heat on Christmas Day as part of a five-game showcase on ABC and ESPN, the league officially announced Monday. OFFICIAL: Christmas Day Schedule 🚨Spurs vs. KnicksHeat vs. Celtics76ers vs. LakersThunder vs. TimberwolvesNuggets vs. WarriorsWatch the NBA on Christmas Day on ABC & ESPN! — NBA (@NBA) August 11, 2026The rivalry added another chapter during the first round of the 2024 playoffs. MORE: Celtics Handed Immediate Test In NBA Season OpenerNBA Delivers Loaded Christmas Day ScheduleCeltics-Heat is only one piece of an impressive holiday lineup. For the Celtics, Christmas Day will bring an opportunity to make another statement about their championship ambitions.