The 25th title in this top-selling sports series reviews the lives of two of the best tennis stars in the country.

Venus and Serena Williams have captured the attention of the tennis crowd like no pair has in recent years. Taken alone, each is a force to be reckoned with on the court. Booming serves clocked at speeds equal and surpassing that of many male tennis players. Powerful return shots that take opponents by surprise. Speed and agility unlike any other player. Each has the skills, the determination, and the strength to make it to the very top of their sport. Yet through all the competition—even at times when they face each other on opposite sides of the net—they remain true to each other, steadfast in their sisterly love.