Venus and Serena Williams

Venus and Serena Williams have dominated the tennis scene for years - winning numerous Grand Slam singles titles to become the first- and second-ranked tennis players in the world.

Venus is known for her 127-mile-per-hour serve and her graceful agility on the court.

Serena is known for her aggressive court style and fashion flair.

By focusing on their dreams and steering clear of the drugs and gang violence that permeated their youth, the Williams sisters have shown the world that two inner-city African Americans can not only make a name for themselves in the predominantly white, upper-class sport of tennis, but they can also raise the level of the game.

As millions have watched their success on court, Venus and Serena Williams have ensured that tennis will never be the same.