Due to an eye injury, Novak Djokovic was forced to withdraw against Feliciano Lopez in Dubai.

Maria Sharapova revealed she was informed by the International Tennis Federation (ITF) few days ago that she had failed a drug at the 2016 Australian Open as she staged a surprise press-conference in Los Angeles on Monday.

A fitting send off for a legend of the sport. Here are the 25 minutes of David Ferrer retirement ceremony and emotional speech on the clay of Madrid. Thank you, take care and good luck David !

End of the match between Azarenka and Radwanska for the Australian Open 2012 on 24th january 2012.

Roger Federer came through a tight QF match against the Finn Nieminen. Just as in his previous match he didn't face any breakpoints. Next up is Nikolay Davydenko who beat Richard Gasquet 7-5 6-3. Fed leads their H2H by 16-2, beating him 6-2 6-2 in their last meeting in Doha this year.

Hurt at the right leg, Rafael Nadal retires against Marin Cilic at the begining of the 5th set in quarters of the Australian Open.