Shams Charania: Sources: The NBA will conduct daily COVID-19 testing for Christmas and New Years’ Holidays — all players and Tier 1 personnel will test from Dec. 26 to Jan. 8. No testing on off days — and fully-boosted or recently recovered players are exempt from testing. All NBA players and Tier 1 Personnel — vaccinated or unvaccinnated — must wear facemasks at all times when at facility, during games, in the locker room and when traveling.