Despite the furore that surrounded the disqualification of Usain Bolt from the world 100m final, the IAAF refuses to change the false start rule.

Oscar Pistorius will have to run the first leg of the 4 x 400m relay at the World Championships to "avoid danger to other athletes", says the IAAF.

The head of track and field’s world governing body has called off a visit to South Africa to discuss the results of Caster Semenya’s gender tests.