Liang Rui wins the women's 50km race walk at the IAAF World Race Walking Team Championships Taicang 2018 (© Getty Images)
The following world records have been ratified...
World record
Women's 50km race walk: 4:04:36 Liang Rui (CHN) Taicang 5 May 2018
Previous: 4:05:56 Inês Henriques (POR) London 13 Aug 2017
World U20 record
Women's 400m hurdles: 53.60 Sydney McLaughlin (USA) Fayetteville 27 Apr 2018
Previous: 53.82 Sydney McLaughlin (USA) Sacramento 25 Jun 2017
IAAF
