Novak Djokovic was born on 22 May 1987 in Belgrade, SR Serbia, SFR Yugoslavia, to Srđan and Dijana Đoković. He is of paternal Serbian and maternal Croatian descent. His two younger brothers, Marko and Djordje, have also played professional tennis.
As a young child, Djokovic was given a mini-racket and a soft foam ball, by his parents, which his father claimed, became "the most beloved toy in his life."
Djokovic began playing tennis at the age of four,[18] when his parents sent him to a tennis camp in Novi Sad, as his parents had not played any tennis in the past. In the summer of 1993, before attending primary school, the six-year-old was sent to a tennis camp organized by the Teniski Klub Partizan and overseen by Yugoslav tennis player Jelena Gencick at Mount Kopaonik, where Djokovic's parents ran a fast-food parlor and a sports equipment business. Upon seeing the child Djokovic playing tennis, she stated: "This is the greatest talent I have seen since Monica Seles."
2021: 9th Australian Open, double career Slam & record weeks at No. 1
Djokovic began his 2021 season by playing for Serbia as the defending champions in the ATP Cup, but the nation was eliminated in the group stage despite Djokovic winning both his singles matches. He then went on to win his 18th Grand Slam title and record-extending 9th title at the Australian Open, with a straight-sets victory over Daniil Medvedev in the final. On 1 March, Djokovic equaled Federer's Open Era record of 310 weeks at world No. 1. The following week, he surpassed that mark and has extended the record in his own right. Djokovic skipped the Dubai Open and the Miami Masters to recover from an abdominal tear he suffered in Melbourne. Djokovic next played at the Monte Carlo Masters, where he defeated the Miami masters runner-up Jannik Sinner in straight sets. However, he ended up losing his third-round match to Dan Evans in straight sets. Djokovic then played at the Serbia Open for the first time since 2011 before the tournament was suspended in 2012, defeating Kwon Soon-woo and fellow compatriot Miomir Kecmanović before losing his semifinal match to Aslan Karatsev in three sets. At the Italian Open, Djokovic defeated Stefanos Tsitsipas and Lorenzo Sonego en route to the final, where he lost in three sets to longtime rival Rafael Nadal.
At the French Open, Djokovic advanced to the final after defeating Rafael Nadal in the semifinals in four sets. It marked Nadal's second loss to Djokovic and (third loss overall) at the event, along with it being the only loss Nadal has suffered in the semifinals at the event. Djokovic then defeated Stefanos Tsitsipas in the final in five sets despite losing the first two sets and became only the third man to win all four Grand Slam singles tournaments at least twice after Roy Emerson and Rod Laver, and the first to accomplish a double career Grand Slam in the Open Era. He became the first man in the Open Era to win a Major after coming back from 0–2 insets in two separate matches, having done so in the final, as well as in the fourth round against Lorenzo Musetti. With the win, Djokovic became the first and only man to win every Major, ATP Masters 1000, and ATP Finals at least twice.