Last update on. From the section OlympicsTokyo Olympic Games on BBC Dates: 23 Jul-8 Aug Time in Tokyo: BST+8. Listen live on BBC TV, BBC iPlayer and BBC Red Button; Listen live on BBC Radio 5 Live, Sports Extra, and Sounds; Live text and video clips available on BBC Sport app and website.USA's Sydney McLaughlin broke her own world record with an incredible run. She won Olympic gold at the Tokyo Games in the women's 400m hurdles.McLaughlin, 21 years old, clocked in at 51.46 seconds for the home straight. This was nearly half a second faster than the previous mark that McLaughlin used to reel in rival Dalilah Mohammed.Muhammad, 31, the Olympic champion, claimed silver with 51.58 seconds.The Netherlands' Femkebol took bronze behind the reigning champion.McLaughlin's record-breaking time helped her lower the mark she set at US trials in June when she ran 51.90secs.McLaughlin and Muhammad have exchanged the world's best record on four occasions over the past two years, after a nearly 16-year period without the record being broken.McLaughlin was a master judge of her efforts in following down Rio 2016 champion Muhammad. Although she set the pace early, McLaughlin still had a slight advantage over Muhammad at the last hurdle.This is the new women's record. It follows Karsten Warholm from Norway, who broke his own 400m hurdles world record on Tuesday.Progresses in Britain's PozziAfter being edged out in the first semi-final, Andrew Pozzi from Britain qualified for Wednesday's final of the 110m hurdles.David King, the GB teammate, did not make it to the final after finishing seventh in a semi-final dominated American world champion Grant Holloway.Holloway seemed to be slowing down as he set the fastest round time in 13.13secs. His compatriot Devon Allen, who won the second semifinal, was just behind him at 13.18.We will keep you posted.