Click on the video player above to watch Road to the Olympic Games, featuring action from the IAAF track & field world championships in London, England.
Sunday's action includes the women's 800-metre final featuring Caster Semenya and Canada's Melissa Bishop as well as the women's 4x400 relay.
Host Scott Russell also interviews IAAF president Sebastian Coe about a range of issues, including renewing the call for lifetime bans on doping offenders.
CBCSports.ca will live stream all of the action from London through the event's final day on August 12. Click here for the full schedule of events.