In 1992, the British 400-metre runner Derek Redmond, popped his hamstring in the Olympic semi-final.
Instead of giving up, Redmond hobbled in agony to the finish line - determined to complete his race.
Half-way round, Redmond's father, Jim, ran on to the track to help his son home.
It's an Olympic story that's inspired millions of people around the world.
Derek Redmond talks to Sporting Witness.
PHOTO: Getty Images
