Kianoush Rostami, who won weightlifting gold at Rio 2016, is to auction his gold medal to raise money for those affected by an earthquake in Iran.
Commonwealth champion Dan Keatings says he experienced a culture of "bullying and manipulation" throughout his time as a British gymnast.
Yusra Mardini represented Team Refugee as a swimmer at the Rio Olympics in 2016, less than a year beforehand she had fled war-torn Syria and made the 25-day journey to Europe.
Four-time Olympic silver medallist Frankie Fredericks is suspended by the International Olympic Committee following his corruption charge.
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Paris and LA react to successful bids for 2024 and 2028 Olympic Games