Unvaccinated Djokovic Out Of U.S. Open; Can't Travel To States

Novak Djokovic is unable to participate in the US Open tennis tournament because he is unvaccinated against COVID-19 and cannot obtain a visa to enter the United States. Earlier in the year, Djokovic was deported from Australia for the same reason. Despite these setbacks, he managed to win the Wimbledon tournament in July.

What challenges did Djokovic face in obtaining a visa?

In which tournament did Djokovic achieve victory in July?