The first World Outdoor Track and Field Championships held on American soil sprinted to a joyful conclusion Sunday night in Eugene with back-to-back U.S. victories in the 4x400 relays. The full stadium was also treated to a new world record in the women’s 100-meter hurdles by Nigeria's Tobi Asuman and a new world record in men's pole vault by Sweden's Mondo Duplantis. The twin relay gold medals padded a commanding U.S. lead in the final medal standings — 33 medals total, of which 13 were gold. Ethiopia captured 10 total medals (4 gold) as did Jamaica (10 total, 2 gold) for second and third place overall.