Mohammadali Khosrarvi (L) of Iran competes with Nisar Ahmad Abdul Rahimzai of Afghanistan during the men's +73kg semifinal of taekwondo event at the 2018 Summer Youth Olympic Games in Buenos Aires, Argentina on Oct. 11, 2018. Nisar Ahmad Abdul Rahimzai lost 16-19 and took the bronze. (Xinhua/Li Ming)