"It's a dream come true for me and I want to be a role model -- not only for disabled people in my country but also for the able-bodied who lose courage," said Baig, whose right leg was left shorter than his left by polio in childhood.

The 33-year-old post office clerk who thought life was over when he couldn't run as fast as the other boys growing up, is one of four athletes representing Pakistan at the London Paralympics from August 29 to September 9.