Gold medalists, Russia's Svetlana Kolesnichenko and Svetlana Romashina pose on the podium during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Bronze medalists, Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume pose on the podium during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Bronze medalists, Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume pose on the podium during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Silver medalists, China's Jiang Wenwen and Jiang Tingting greet fans during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Bronze medalists, Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume greet fans during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Gold medalists, Russia's Svetlana Kolesnichenko and Svetlana Romashina, silver medalists, China's Jiang Wenwen and Jiang Tingting and bronze medalists, Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume pose on the podium during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Gold medalists Russia's Svetlana Kolesnichenko and Svetlana Romashina greet fans during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

Silver medalists, China's Jiang Wenwen and Jiang Tingting, pose on the podium during the awarding ceremony of the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. (Xinhua/Guo Yong)

 

 Japan's Yumi Adachi and Yukiko Inui compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Yumi Adachi and Yukiko Inui took the 5th place with a total score of 91.620 points. (Xinhua/Guo Yong)

 

  Russia's Svetlana Kolesnichenko and Svetlana Romashina compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Svetlana Kolesnichenko and Svetlana Romashina won the gold medal with a total score of 97.680 points. (Xinhua/Guo Yong)

 

 Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Ona Carbonell Ballestero and Margalida Crespi Jaume won the bronze medal with a total score of 94.990 points. (Xinhua/Guo Yong)

 

  Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Ona Carbonell Ballestero and Margalida Crespi Jaume won the bronze medal with a total score of 94.990 points. (Xinhua/Guo Yong)

 

 Spain's Ona Carbonell Ballestero and Margalida Crespi Jaume compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Ona Carbonell Ballestero and Margalida Crespi Jaume won the bronze medal with a total score of 94.990 points. (Xinhua/Guo Yong)

 

 Canada's Emile Kopcik and Stephanie Leclair compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Emile Kopcik and Stephanie Leclair took the 8th place with a total score of 87.370 points. (Xinhua/Guo Yong)

 

 Russia's Svetlana Kolesnichenko and Svetlana Romashina compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Svetlana Kolesnichenko and Svetlana Romashina won the gold medal with a total score of 97.680 points. (Xinhua/Guo Yong)

 

 Greece's Evangelia Platanioti and Despoina Solomou compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Evangelia Platanioti and Despoina Solomou took the 7th place with a total score of 87.980 points. (Xinhua/Guo Yong)

 

 Russia's Svetlana Kolesnichenko and Svetlana Romashina compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Svetlana Kolesnichenko and Svetlana Romashina won the gold medal with a total score of 97.680 points. (Xinhua/Guo Yong)

 

 China's Jiang Wenwen and Jiang Tingting compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Jiang Wenwen and Jiang Tingting won the silver medal with a total score of 95.350 points. (Xinhua/Guo Yong)

 

 China's Jiang Wenwen and Jiang Tingting compete during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Jiang Wenwen and Jiang Tingting won the silver medal with a total score of 95.350 points. (Xinhua/Guo Yong)

 

 China's Jiang Wenwen and Jiang Tingting wait for their scores during the Duet Free Finals of the Synchronised Swimming competition in the 15th FINA World Championships in Barcelona, Spain, on July 25, 2013. Jiang Wenwen and Jiang Tingting won the silver medal with a total score of 95.350 points. (Xinhua/Guo Yong)