This combination picture taken on March 21, 2015 shows Dane Jackson of the United States, Nick Troutman of Canada, Max Karlsson of Sweden, Chris Gragtmans of the United States(top, from L-R), Martina Wegman of France, Brendan Wells of the United States, Xian Junguang of China and Todd Wells of the United States (below, from L-R) compete during the freestyle competition of 2015 Red Bull Kayak Mania at the Zen wave in Nujiang River, Lisu Autonomous Prefecture of Nujiang, southwest China's Yunnan Province, March 21, 2015. (Xinhua/Ding Xu)
