What is the fine-grained topic of the following text: Jann Mari Nayre saw his medal bid in the 2018 Youth Olympic Games come to an end after dropping his match against Rio de Janeiro Olympian Kanak Jha of the United States yesterday at the Table Tennis Arena of the Technopolis in Buenos Aires, Argentina. Only return the topic.
Jann Mari Nayre's performance at the 2018 Youth Olympic Games