Overview
- Brazil's Alison Dos Santos ran 45.80 in the men's 400m hurdles on Thursday, bettering Karsten Warholm's 45.94 mark and beating Warholm into second place.
- American Masai Russell lowered the women's 100m hurdles world record to 12.09 in Zurich, shaving 0.03 seconds off Tobi Amusan's previous best.
- Julien Alfred won the women's 100m in 10.70, a Saint Lucia national record decided by a photo finish that ended Melissa Jefferson‑Wooden's more than two‑year unbeaten run in the event.
- Switzerland's Audrey Werro ran 1:53.70 for the women's 800m, a meet and national record and the third‑fastest time ever, while Armand Duplantis cleared 6.25m as he and Emmanouil Karalis pushed the pole‑vault record to a near miss at 6.32m.
- The Zurich results carry immediate prize and selection effects, will require formal ratification for the world marks, and arrive as a momentum swing ahead of the Diamond League Final and next month's World/Ultimate Championships.