※写真は「全仏オープン」(フランス・パリ)で初戦を突破した21歳のチョン・ヒョン Photo:PARIS, FRANCE - MAY 30: Hyeon Chung of South Korea hits a backhand during the first round match against Sam Querrey of The USA on day three of the 2017 French Open at Roland Garros on May 30, 2017 in Paris, F