Isinbayeva insists Olympic hopes are not dead

Pole vault legend Yelena Isinbayeva defiantly claimed all hope of competing at the Rio Olympics is not lost after posting a world leading mark in the Russian Championships on Tuesday.

Russian track and field athletes are banned from the Games in August unless they can prove they have not been tainted by the disgraced Russian system.

Isinbayeva has threatened to sue world athletics governing body the IAAF over the Olympic ban and she stressed on Tuesday that she hasn't thrown in the towel.