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Tokyo 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.
Dina Asher Smith began her quest to be the first British woman in the Olympic individual sprint gold. She started by making routine progress at the 100m heats.
Asher-Smith was second to American Teahna Dans, but she reached the semi-finals in 11.07 seconds.
Asha Philip and Daryll Neita, team-mates, also placed second in their heats. This qualifies them for Saturday's semi finals.
The semi-finals of the women's 800m were reached by the British trio Jemma, Keely, and Alex Bell.
Tom Gale, a high jumper, reached the men's final with 2.28m.
Tokyo 2020's biggest draw is the 100m women's race.
25-year-old Asher-Smith is the fastest British woman to date. She is the reigning 200m world champion, four-time European champion, and a bronze medallist in the Olympic relay at 100m in Rio.
She is facing off against Elaine Thompson-Herah and Shelly-Ann Fraser -Pryce from Jamaica, who have shared the Olympic 100m title.
Fraser-Pryce (34), the 2008 and 2012 champ, ran 10.63 seconds at a June national trials warm up event to become the fastest woman alive. This set the standard for the Games.
Thompson-Herah (29 years old) will be aiming to keep her title from 2016.
Next, there's Nigeria's Blessing Ogbare who ran the fastest time since 2018 in 10.89secs on July 6.
Asher-Smith was the 11th fastest heats finisher, followed by Thompson-Herah (10.82), Fraser-Pryce (10.84) and Okagbare (11.05).
Asher-Smith will be running in the 100m semi-finals at 11:15 BST (19.15 local time) Saturday. Philip will be in the second at 11.23 BST, and Neita in third at 11.31 BST.
"It felt good being out here and finally getting going and it's just great that finally my Olympics are under way," said Briton, whose 100m season's best was 10.91.
"I was thinking about getting through the next round safe, but also knowing that I have another level to offer.
"I'm really happy. "I am really happy.
Reekie (23 years old) was one of two runners to run in the 800m heats under two minutes. Bell (19 year-old British champion) also ran through.