Asafa Powell
Runner
Jamaican-born athlete who specializes in the 100 m and won a gold medal at the 2008 Beijing Olympics in the 4x100 m relay.
His childhood dream job was to be a mechanic.
He broke the 10-second barrier - the hallmark of a great sprinter - more than 70 times.
He lost three family members in rapid succession when one brother died from a gunshot, another brother died from a heart attack, and his uncle was stabbed.
He competed alongside fellow Jamaican Usain Bolt in the 2008 Beijing Olympics.