Hugo Calderano of Brazil competes during the men's singles round of 16 match between Hugo Calderano of Brazil and Ma Long of China at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 25, 2019. (Xinhua/Han Yan)

Harimoto Tomokazu (R) of Japan shakes hands with An Jaehyun of South Korea after the men's singles round of 16 match at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 25, 2019. Harimoto Tomokazu lost 2-4. (Xinhua/Tao Xiyi)