The first time Chris Evert and Martina Navratilova stepped onto a tennis court together, the world scarcely noticed. Only a few hundred spectators saw the pert 18-year-old beat the scrappy 16-year-old Czech in 1973. "I remember that she was fat," Evert recalled. "She was very emotional on the court, whining if she didn't feel she was playing well. But I remember thinking, if she loses weight, we're all in trouble." Said Navratilova, "My goal was for her to remember my name." Eighty matches later