Alison Dos Santos of Brazil set a new men’s 400m hurdles world record with 45.80. Masai Russell of the U.S. claimed the women’s 100m hurdles world record with 12.08.

The Zurich Diamond League saw numerous personal bests and national records. Parker Wolfe won the men’s 3,000m, setting a meeting record. Anna Cockrell dominated the women’s 400m hurdles, finishing in 52.13. Read more racing coverage.

Audrey Werro of Switzerland set a new Diamond League, national, and meeting record in the women’s 800m with 1:53.70. Emmanuel Wanyonyi of Kenya set a new world lead in the men’s 800m with 1:41.76. Related: Audrey Werro sets new national record in Zürich 800m.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.