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
Sprinter opens up about his recovery from near fatal motorbike crash in 2017, the psychological impact it had on him, his goals for the Olympic trials and Tokyo and much more
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