Ryohei Arai of Japan competes during Men's Javelin Throw Qualification on Day 7 of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 10, 2017. (Xinhua/Wang Lili)
Ryohei Arai of Japan competes during Men's Javelin Throw Qualification on Day 7 of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 10, 2017. (Xinhua/Wang Lili)