Several anti-doping agencies, including those of the United States and Canada, want a complete ban on Russia competing at the Rio Olympics if next week's key report into allegations of state-backed doping at the 2014 Sochi winter Olympics is damning, they said on Saturday.
With the Rio Olympics less than three weeks away, the IOC on Monday promised "the toughest sanctions available" after a report found Moscow had concealed hundreds of positive doping tests in many sports ahead of the Sochi winter Games.
As the sprinter runs his last race, we veer off the trodden tourist trail in Jamaica and revisit his hometown, Trelawny Parish.