The treble is still on for the Dutch athlete after she picks herself up from the track following a trip to qualify for next round, while there is drama in the women's 200m heats too
Italian creates history as he breaks European record to see off Fred Kerley and Andre de Grasse, while there's false start heartbreak for Zharnel Hughes
Keely Hodgkinson, Jemma Reekie and Alex Bell sail through semi-finals as Andre De Grasse and Juan Miguel Echevarria also impress in qualifying on Saturday night in Tokyo
Shelly-Ann Fraser-Pryce, Shaunae Miller-Uibo, Allyson Felix, Kendra Harrison and Sydney McLaughlin are among the big names contesting the shortest women's track events
Namibian 18-year-old runs 48.54 for 400m but must now focus on 200m in Tokyo due to her naturally-high testosterone levels that are above World Athletics' limits
Sprinting sensation on focusing on her own race when up against Dina Asher-Smith, being inspired by Shelly-Ann Fraser-Pryce and advice from Carmelita Jeter
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