21 May 2012 Last updated at 12:30

Paralympics: Pistorius predicts close 100m final

Four-time Paralympic gold medallist Oscar Pistorius expects "an unbelievably close" 100m competition at the London 2012 Games.

Pistorius won gold in the event four years ago but was beaten at last year's World Championships by American Jerome Singleton.

Having made the Olympic qualifying time in the 400m, the South African is targeting competing at both the Olympics and Paralympics and talks of his excitement at this historic ambition.