Both have won gold medals in sprinting in consecutive Olympics.
Both have run under 9.9 seconds in the 100 meter dash
Both have run under 19.80 seconds in the 200 meter dash
Both are over 6 feet tall
Both were born on the North American continent.
Both had held the 100 meter dash world record during their career.
Nothing other than that they are athletes and Olympians.
They both hate each other.
Both are sprinters..
both are athletes.. :D
avcc
