Players battle for the ball during their match at the swamp soccer China tournament in Beijing, June 26, 2014. The 32 teams from across the country participated in the soccer event to celebrate the 2014 World Cup in Brazil. (Photo by Kim Kyung-Hoon/Reuters)

Players battle for the ball during their match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

Players battle for the ball during their match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

Players are covered with mud after their match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

A woman pours water into a player's eye at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

A player kicks a ball during a match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

Players battle for the ball during their match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

A female goalkeeper chases a ball during a match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

Players battle for the ball during their match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)

A female player (R) battles for the ball against a male player during their match at the swamp soccer China tournament in Beijing, June 26, 2014. (Photo by Kim Kyung-Hoon/Reuters)