World No. 2 Novak Djokovic is currently in Belgrade, Serbia, and was spotted training at the Tipsarevic Tennis Academy on Saturday. The 20-time Grand Slam winner was seen practicing some forehand and backhand drills.Djokovic suffered a shock defeat at the hands of Czech qualifier Jiri Vesely in the quarterfinals of the Dubai Tennis Championships last week. Vesely defeated the Serb in straight sets, knocking him out of the tournament and ending his stay at No. 1Tennis TV@TennisTVVesely's DREAM run to the final:R1: CilicR2: Bautista AgutQF: Djokovic SF: Shapovalov@jiri_vesely #DDFTennis00:39 AM · Feb 26, 202262060Vesely's DREAM run to the final:R1: CilicR2: Bautista AgutQF: Djokovic SF: Shapovalov@jiri_vesely #DDFTennis https://t.co/VuVQ5rQoDfAfter the defeat in Dubai, Djokovic returned to Belgrade, where he along with former World No. 8 Janko Tipsarevic.NovakDjokovicFanClub@NovakFanClub. @DjokerNole training in BelgradeTipsarević Tennis Academy (Green Bay) lolatennis IG#novakdjokovic #djokovic #NoleFAM6:48 PM · Mar 5, 202217813. @DjokerNole training in BelgradeTipsarević Tennis Academy (Green Bay) 📷 lolatennis IG#novakdjokovic #djokovic #NoleFAM https://t.co/IUEzC2aoDVTipsarevic, a former Serbian player, posted a picture with Djokovic and other players from his academy on his Instagram handle. He said that a "special guest" recently visited his academy, referring to the World No. 2. He also used a goat emoji while referring to Djokovic, hailing him as the greatest player of all time. The two were joined by former World No. 12 Viktor Troicki."Got a special 🐐 guest, helping us out today," Tipsarevic captioned the post. View this post on Instagram Instagram PostDjokovic enjoyed a 5-2 lead in the head-to-head over Tipsarevic, having defeated him on all three surfaces on the ATP tour.Janko Tipsarevic with Novak Djokovic at the Miami OpenNovak Djokovic will not compete at Sunshine Double in 2022Novak Djokovic at the Tokyo Olympics 2020Despite undertaking a training session in Belgrade, Djokovic is unlikely to take part in any tournament in March. The Serb is on the entry list for the Indian Wells Masters and Miami Masters, collectively known as the Sunshine Double, but hinted that he won't travel to the United States as he is unvaccinated.Eurosport@eurosport"I can't go, I can't enter the United States" Novak Djokovic's travel woes look set to continue 3:33 PM · Feb 22, 2022155"I can't go, I can't enter the United States" Novak Djokovic's travel woes look set to continue 😬Interestingly, the 34-year-old is the only tennis player to have won the Sunshine Double four times.C Kristjánsdóttir ●🐊@CristinaNclNovak Djokovic is the only man to have won the Sunshine Double on four occasions. #Djokovic𓃵 cengnews.com/entertainment/…00:32 AM · Mar 5, 202233028Novak Djokovic is the only man to have won the Sunshine Double on four occasions. #Djokovic𓃵 cengnews.com/entertainment/…The Serb was recently given the green light to defend his title at the 2022 French Open and contest in Monte-Carlo after the French government eased up on its vaccination policy. The country will remove vaccine passes in a couple of weeks, paving the way for the Serb to compete without being vaccinated. However, the situation could change with evolving COVID variants and rules set by countries.Eurosport@eurosportNovak Djokovic looks set to return to Grand Slam tennis at the French Open 6:56 PM · Mar 3, 20221337110Novak Djokovic looks set to return to Grand Slam tennis at the French Open 🇫🇷Djokovic is also expected to play at the Italian Open, a Masters event that he has won on five occasions.The Kenyan Digest@kenyan_digestUnvaccinated Djokovic can compete at Italian Open, says sports minister : The standard Sports - kenyandigest.com/unvaccinated-d…7:34 PM · Feb 19, 20221Unvaccinated Djokovic can compete at Italian Open, says sports minister : The standard Sports - kenyandigest.com/unvaccinated-d… https://t.co/MGgXrLMOH8Also Read: "One of the main criticisms people say about Novak Djokovic is that he is not authentic but I believe the opposite; he is extremely authentic" - Patrick Mouratoglou