25/07/2015 GMT

From the Olympic Park in East London, Azi Farni brings us five accounts of extraordinary moments in sporting history. In this special edition of Witness, we'll hear from the man who persuaded footballing legend Pele to sign up to a little known American soccer team, the woman who swam from the United States to the Soviet Union during the Cold War and the ninety-six-year-old who played in the world's first female professional baseball team.