Niyonsaba, who is banned from running in women's events between 400m and the mile as she is intersex, ran 5:21.56 to destroy Sonia O'Sullivan
's outdoor world record of 5:25.36 which had stood since 1994. Niyonsaba's mark also was faster than Genzebe Dibaba
's indoor world record of 5:23.75 set in 2017. In men's action, Devon Allen
became the second man in 2021 to break 13:00 as he ran a new pb of 12.99. Other winners included Getnet Wale
(8:12 steeple) and Ryan Crouser
*MB: Francine Niyonsaba breaks her first WORLD RECORD!!!