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KAWASAKI, JAPAN - MAY 10: Cheng Chao Tsun competes in the javelin during the Seiko Golden Grand Prix Tokyo 2015 at Todoroki Stadium on May 10, 2015 in Kawasaki, Japan. (Photo by Masashi Hara/Getty Images)

KAWASAKI, JAPAN - MAY 10:  Cheng Chao Tsun competes in the javelin during the Seiko Golden Grand Prix Tokyo 2015 at Todoroki Stadium on May 10, 2015 in Kawasaki, Japan.  (Photo by Masashi Hara/Getty Images)