Oscar Pistorius had both legs amputated as a baby, and he credits his mother for his incredible success since then.

"My mother said to us in the morning : 'Carl — this is my brother — you put on your shoes and Oscar you put on your prosthetic legs and that is the last I want to hear about it.' I grew up not really thinking I had a disability. I grew up thinking I had different shoes."

The South African sprinter will be the first double-amputee athlete to compete at any Olympics when he runs in the 400 meters in London on Saturday.

— Raf Casert — Twitter http://www.twitter.com/rcasert