- Proof of vaccination will be needed until at least 10 April
- Two key US tournaments begin on 6 March and 20 March
Novak Djokovic is again set to miss Indian Wells and the Miami Open after United States travel authorities extended the requirement for non-US nationals to be vaccinated.
Although coronavirus rules have been relaxed or removed in many countries, proof of vaccination will be needed to enter the United States until at least 10 April.