Steffi Graf of Germany, the last winner of the Grand Slam, also took the Summer Olympic gold medal in 1988 to complete a stunning Golden Grand Slam.

In January, Djokovic began his grand slam run where he beat the fifth seeded Andy Murray of Great Britain 6-4, 6-2, 6-3 to take the Australian Open title in Melbourne.

However in June, the Serbian would lose to the third seeded Roger Federer of Switzerland 7-6(7-5), 6-3, 3-6, 7-6(7-5) in Paris at the French Open to record his only non-retirement defeat of the year.

Then at Wimbledon in July, Djokovic topped the then world number one Rafael Nadal of Spain 6-4, 6-1, 1-6, 6-3 in the championship final.

In the final grand slam of the year at the US Open, Djokovic faced a rematch versus Federer once again in the semifinal round. Down matchpoint in the fifth set, the Serbian gambled to strike a stunning crosscourt forehand return winner before winning the contest 6-7(7-9), 4-6, 6-3, 6-2, 7-5.

In the final round, the 24 year old topped the second seeded Nadal 6-2, 6-4, 6-7(3-7), 6-1.

And although the 25 year old Nadal still leads Djokovic 16-13 in their lifetime head to head match-up, Djokovic won all six meetings between the two players this year to form a stranglehold on the ATP Tour number one ranking.

Djokovic, who replaced Nadal atop the ATP Tour rankings after Wimbledon this year, beat the Spaniard in six ATP Tour finals: Indian Wells, Miami, Madrid, Rome, Wimbledon and the US Open.

Djokovic currents owns a 64-2 won-lost ATP Tour record for 2011.