DUBAI, Dec. 26 (Xinhua) -- In the three-day Mubadala World Tennis Championship which started in Abu Dhabi on Thursday, six players are among the world top 10.

Serbian Novak Djokovic, ranked second in the world, will on Friday take on the winner between Britain's Andy Murray and France's Jo-Wilfried Tsonga.

The 26-year-old Djokovic will be accompanied by 46-year-old German legend Boris Becker.

Becker, who won Wimbledon in 1985 as the youngest player ever at age 17, announced that he would become the new trainer of Djokovic.

Spaniard Rafael Nadal, ranked world No. 1, will play on Friday against the winner between David Ferrer and Stanislas Wawrinka. Enditem