Oscar Pistorius has played down his chances of winning the 100m sprint at the Paralympics.
Pistorius became the first paralympian to compete in the standard Olympic Games earlier this month, qualifying for the 400m.
The South African believes that, despite being the defending champion over 100m, his focus on the longer distance sprints could allow rivals such as Britain's Jonnie Peacock to take gold in this summer's event.
"I think it's important to note I haven't run a 100m personal best in five years," said Pistorius, who will also race in the 200m, 400m and 4x100m relay in London.
"It's not really my event so, although I do feel threatened, I don't feel helpless. As Jonnie and those guys focus on the 100m, my focus is on the 400m, on the opposite side of the spectrum when it comes to sprinting. If I can just get in the top three I think I'd be very happy.
"My focus is on trying to defend my titles, but then I have to be realistic and say the 400m and the 200m are the events I am better suited at."
The Paralympic 100m final takes place next Thursday night.