Watch the best moments from Day 1 of the 2026 World Athletics Ultimate Championships in Budapest, featuring title-winning performances from Armand Duplantis, Masai Russell, Ja’Kobe Tharp, Jakob Ingebrigtsen, Larissa Iapichino, Yaroslava Mahuchikh and Merlin Hummel, plus the United States’ thrilling victory in the mixed 4x100m relay.