Overview

• Team USA's mixed 4x100m relay was disqualified after a failed baton handoff, continuing a pattern of relay errors, but the team rebounded with strong performances in other events.
• Canada delivered a commanding performance in the mixed 4x100m heats, clocking a world-leading 40.90 seconds to secure a spot in the final and Tokyo qualification.
• Spain upset Jamaica in the women’s 4x100m heats, setting a national record of 42.18 seconds and demonstrating precise execution against the sprint powerhouse.
• Visa denials for Nigeria and the Dominican Republic, along with key athlete withdrawals from Botswana and the U.S., significantly altered the competitive landscape.
• With top-14 finishes in each relay event securing World Championships berths, Day 1 saw emerging teams capitalize on opportunities as traditional powers faltered.