Tennis star Novak Djokovic's status for the Australian Open has been one of the biggest storylines in the sport. Djokovic, who has yet to reveal if he has been vaccinated, has had his status up in the air for the Aussie Open, which requires all players to have received the vaccine. With Djokovic's Australian Open status still questionable, the Serbian tennis star made a shocking decision regarding the upcoming ATP Cup tournament.

World number one Novak Djokovic will miss the ATP Cup. It's a shocking decision by Djokovic ahead of the Australian Open, who represented Serbia and led them to a victory in the inaugural ATP Cup back in 2020.

Djokovic's shocking ATP Cup decision puts the spotlight on his status for the Australian Open. He is reportedly practicing in Belgrade but will skip the ATP Cup, likely a move designed at getting the Serbian star, who is 34, some rest. However, the decision could also be telling in regard to his status for the year's first Grand Slam tournament.

The nine-time Australian Open champion is looking to take the lead for the most Grand Slam trophies ever won on the men's side, though his vaccination status could be an obvious roadblock in that quest.

Djokovic will either have to be vaccinated or be medically exempt to participate in the Australian Open, with tournament director Craig Tilley saying that they won't “force Djokovic to disclose that information” but that it would be difficult for a tennis star to travel the world and be unvaccinated in this current world.

With the Australian Open set to begin in mid-January, Novak Djokovic could have another big announcement coming up after his shocking ATP Cup decision.