Boca Juniors' Cristian Erbes (L) slips on the ground during an Argentine First Division soccer match against River Plate Buenos Aires October 5, 2014. REUTERS/Agustin Marcarian 

Japan's Yumi Kaneko, Eri Kasahara and Miho Echizenya (L-R) tackle a Thai player during their women's preliminary kabaddi match in the Songdo Global University Gymnasium at the 17th Asian Games in Incheon September 29, 2014. REUTERS/Olivia Harris 

China's Li Jinzhe competes in the men's long jump final at the Incheon Asiad Main Stadium during the 17th Asian Games September 30, 2014. REUTERS/Jason Reed 

Mercedes Formula One driver Nico Rosberg (bottom) of Germany leads teammate Lewis Hamilton (C) of Britain and Williams Formula One driver Valtteri Bottas (top) of Finland behind a safety car (unseen) as they start the first lap of the rain-affected Japanese F1 Grand Prix at the Suzuka Circuit October 5, 2014. REUTERS/Toru Hanai 

Iran's Ehsan Rouzbahani (R) fights with Kazakhstan's Adilbek Niyazymbetov in their men's light heavy (81kg) semi-final boxing match at the Seonhak Gymnasium during the 2014 Asian Games in Incheon October 2, 2014.
REUTERS/Kim Kyung-Hoon 

China's Liu Jiahui performs with the hoop in the individual rhythmic gymnastics competition at the Namdong Gymnasium Club during the 17th Asian Games in Incheon October 2, 2014. REUTERS/Kim Hong-Ji 

A dog surfs at the 6th Annual Surf City surf dog contest in Huntington Beach, California September 28, 2014. REUTERS/Lucy Nicholson 

South Korea's Jung Jihyun (red) celebrates beating Uzbekistan's Dilshodjon Turdiev in their Men's Greco-Roman 71 kg gold medal wrestling match at Dowon Gymnasium during the 2014 Asian Games in Incheon September 30, 2014. REUTERS/Issei Kato 

Christopher Jr Ulboc of the Philippines (400) competes in the men's 3000m steeplechase final at the Incheon Asiad Main Stadium during the 17th Asian Games September 29, 2014. REUTERS/Jason Reed 

Boca Juniors' Andres Chavez fights for the ball with River Plate's Ramiro Funes Mori (rear) during their Argentine First Division soccer match in Buenos Aires October 5, 2014. REUTERS/Agustin Marcarian 

China's Ding Ning serves against Japan's Ai Fukuhara during their women's team gold medal table tennis match at Suwon Gymnasium during the 2014 Asian Games in Incheon September 30, 2014. REUTERS/Kim Hong-Ji 

Novak Djokovic of Serbia returns the ball during his men's quarter-final match against Grigor Dimitrov of Bulgaria at the China Open tennis tournament in Beijing, October 3, 2014. REUTERS/Jason Lee 

Arsenal's Alex Oxlade-Chamberlain (R) challenges Galatasaray's Burak Yilmaz during their Champions League soccer match at the Emirates Stadium in London October 1, 2014. REUTERS/Stefan Wermuth 

Torino's Kamil Glik (R) fights for an aerial ball with FC Copenhagen's Andreas Cornelius during their Europa League Group B soccer match at Olympic Stadium in Turin October 2, 2014. REUTERS/Giorgio Perottino 

Rafael Nadal of Spain eyes the ball as he prepares to hit a return during his men's quarter-final match against Martin Klizan of Slovakia at the China Open tennis tournament in Beijing, October 3, 2014. REUTERS/Jason Lee 

Kazakhstan's Zhanibek Alimkhanuly (L) fights Jordan's Odai Alhindawi during their men's middleweight 75kg gold medal boxing match at the Seonhak Gymnasium during the 2014 Asian Games in Incheon, October 3, 2014. REUTERS/Kim Kyung-Hoon