Swedish pole vaulter Armand Duplantis attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

Dominican triple jumper Thea Lafond attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

Kenyan runner Janeth Jepkosgei Busienei attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

Swedish pole vaulter Armand Duplantis attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

Jamaican sprinter Usain Bolt attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

World Athletics president Sebastian Coe attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

Swedish pole vaulter Armand Duplantis (L) and his partner Desire Inglander attend an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)

Jamaican sprinter Usain Bolt attends an event marking the one-year countdown to the World Athletics Ultimate Championship 2026 in Tokyo, Japan, Sept. 11, 2025. (Xinhua/Jia Haocheng)