She's been playing professional tennis for half of her life.

But if professional tennis runs true to form, that change will not be made for years.

He played professional tennis for 15 years and earned $896,974.

All that has been happening in men's professional tennis for 20 years and more.

For now at least, coaches are not allowed on the court in professional tennis.

In the world of professional tennis, you learn your limitations quickly.

In 2008, she returned to professional tennis after an absence of four years.

At the end of 1930 he then announced his retirement from professional tennis.

He was the beginning of professional tennis as we know it.

They need to know what the standards are in professional tennis these days.