At my age, trying any kind of physical self-improvement feels like fighting a losing battle — then something strange happened ...

Nick Bollettieri, Tennis Coach Who Worked With Andre Agassi and Other Stars, Dies at 91 The Hall of Fame instructor helped Monica Seles, Serena and Venus Williams, Jim Courier and Maria Sharapova.

Kathy Gunst resisted tennis as a kid. Her parents were fanatics, and on principle, she decided the sport — and the country ...