of Serbia is through to the 2nd round of the ATP Masters 1000 event in Shanghai, China having beaten the former world number 3 Ivan Ljubicic of Croatia in straight sets 6-3 6-3.
Both Ljubicic and Djokovic played in the ATP 500 event in Beijing China last week, Ljubicic defeated the world number 4 Andy Murray in straight sets and he went on to reach the semi final where he lost in 3 sets to David Ferrer in the final. Djokovic then beat Ferrer in the final to defend his title.
Djokovic is the number 2 player in the world and he just last month beat the former world number 1 and 5 time US Open Champion Roger Federer in 5 sets in the semi final of the US Open.
Djokovic then was beaten in the final in 4 sets by the world number 1 Rafael Nadal of Spain 6-4 5-7 6-4 6-2.