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}} is a Japanese male table tennis player.〔(【引用サイトリンク】title=ITTF players' profiles )〕 He is the gold medalist at the 2010 Youth Olympic Games and he won the World Junior Table Tennis Championships in 2010 (doubles) and 2011 (singles).〔(【引用サイトリンク】title=ITTF Database )〕 He is currently one of the top players under the age of 21.〔(【引用サイトリンク】title=ITTF Under 21 World ranking Record for NIWA Koki (JPN) )〕 On 21 April 2012, he defeated Ma Long of China, World Rank no 1, to become the first player to be qualified for 2012 Olympics from the Asian Olympic Qualifiers. Since 2012 he is playing for the German Team TTC matec Frickenhausen. He won the 2014 Russian Open singles title. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Koki Niwa」の詳細全文を読む スポンサード リンク
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