|Dates: 23 July-8 August Time in Tokyo: BST +8|
|Coverage: Watch stay on BBC TV, BBC iPlayer, BBC Red Button and on-line; Listen on BBC Radio 5 Live, Sports Extra and Sounds; stay textual content and video clips on BBC Sport web site and app.|
Dina Asher-Smith returned as Great Britain set a brand new nationwide file to win their warmth and attain the ladies’s 4x100m relay closing on Friday.
The 200m world champion ran the third leg because the British quartet completed forward of the USA and Jamaica in 41.55 seconds.
Asher-Smith, who tore her hamstring in July, pulled out of the Olympic 200m after failing to make the 100m closing.
Asha Philip, Imani-Lara Lansiquot and Daryll Neita accomplished the GB crew.
“There was never any doubt in my mind that I’d be lining up here today because the relay’s really important, we got a bronze medal in Rio,” Asher-Smith informed BBC Sport.
“These ladies are in great shape, they’re incredibly talented, so I knew I had to rest up and get ready for the team event. I’ve been training hard to get ready.”
Individual ladies’s 100m gold medallist Elaine Thompson-Herah and silver medallist Shelly-Ann Fraser-Pryce didn’t run for Jamaica however each are prone to return for Friday’s closing.