![Novak Djokovic of Serbia returns the ball against Croatia's Ivo Karlovic during their quarterfinal of the Qatar Open at the Khalifa tennis complex in Doha, Qatar, Thursday, Jan. 8, 2015. (AP Photo/Osama Novak Djokovic of Serbia returns the ball against Croatia's Ivo Karlovic during their quarterfinal of the Qatar Open at the Khalifa tennis complex in Doha, Qatar, Thursday, Jan. 8, 2015. (AP Photo/Osama](https://c8.alamy.com/comp/2N38WN1/novak-djokovic-of-serbia-returns-the-ball-against-croatias-ivo-karlovic-during-their-quarterfinal-of-the-qatar-open-at-the-khalifa-tennis-complex-in-doha-qatar-thursday-jan-8-2015-ap-photoosama-faisal-2N38WN1.jpg)
Novak Djokovic of Serbia returns the ball against Croatia's Ivo Karlovic during their quarterfinal of the Qatar Open at the Khalifa tennis complex in Doha, Qatar, Thursday, Jan. 8, 2015. (AP Photo/Osama
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Tennis fever continues as 2015 Qatar Total Open kicks off this weekend : The Moodie Davitt Report -The Moodie Davitt Report
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Victoria Azarenka into Qatar Open final with win over Venus Williams | Victoria Azarenka | The Guardian
![Qatar Tennis Federation on Twitter: "Another day of flawless sunshine on Khalifa International Tennis and Squash Staduim! #QatarTennis #QTF #Doha http://t.co/7HYblauCUS" / Twitter Qatar Tennis Federation on Twitter: "Another day of flawless sunshine on Khalifa International Tennis and Squash Staduim! #QatarTennis #QTF #Doha http://t.co/7HYblauCUS" / Twitter](https://pbs.twimg.com/media/CEtCAnAW8AADSbd.jpg)