Tennis Channel's year-long celebration of the WTA Tour's 50th anniversary, brought to you by Intuit Quickbooks.

"We're kind of at a tipping point," King told the Associated Press. "People are actually looking at women's sports like a great investment."

A wide range of styles ensure that the tour will never stop growing, as Chapter 9 of our year-long series explains.

Coco Gauff compared Friday evening’s special event in Manhattan to, “a women’s tennis history book that has come to life.”

Tennis is by far the most significant women's sport on the planet.

The “Original Nine” came from just two countries: seven Americans, two Australians. Since then, champions and contenders from everywhere continue to emerge.

They are but four examples of exceptional teen accomplishment on tour.

Two sisters from Compton, Calif. changed the landscape of tennis for good.

Who ever thought that a player could challenge a Golden Slam winner, and—over just 15 matches—that a duo could give us contests like Chrissie and Martina?

All told, the two played one another 80 times. Navratilova won 43, Evert 37. A staggering 60 of those matches came in finals.

The mission in 1973 was serious: prove the legitimacy of women’s tennis—and by extension, emphatically showcase why women deserved to be treated as equals.