The Detroit Pistons face the Boston Celtics in a regular season NBA game on Monday, Dec. 15, 2025 at TD Garden in Boston, Mass.

The New York Knicks face the Orlando Magic and the San Antonio Spurs battle the Oklahoma City Thunder in the NBA Cup Semifinals on Saturday, Dec. 13.

Check local listings each week. Both games will stream live nationwide on Peacock. NBC Sports will launch Sunday Night Basketball across NBC and Peacock on Feb. 1, 2026. For a full schedule of the NBA on NBC and Peacock, click here.

Get ready for some spectacular round ball, because Peacock NBA Monday returns in full force December 15 with a pair of exciting games flexed into the primetime slots by the league earlier this month. It all starts with the Pistons and the Celtics on the East Coast, and then we move out West, for another stellar matchup.

Week 9 features 40 regular-season games and one Emirates NBA Cup Championship Game. We’ve got one key game to lock in on for all 30 NBA teams.

Here is the full National Basketball Association schedule for Dec. 15 and how to watch all the games. Or see our sortable NBA schedule to filter by team or division. All times Eastern and accurate as of Monday, Dec. 15, 2025, at 4:20 a.m.

The Dallas Mavericks are wrapping up their week off while the NBA Cup progresses, and will hope to carry over the momentum that built just before the break. Winners of four of their last five due to the blossoming play of Ryan Nembhard and the ascendancy of Cooper Flagg, combined with ace veteran support.