Serena Williams, the 23-time Grand Slam champion who has been the face of tennis since winning her first U.S. Open in 1999, said Tuesday that she planned to retire from the sport after playing once more in the tournament, which begins later this month.

Williams, who long ago transcended her sport as a dominant cultural figure, said in an as-told-to cover story for Vogue that she has “never liked the word retirement,” and preferred the word “evolution” to describe her next steps. “I’m evolving away from tennis, toward other things that are important to me,” including working with her venture capital firm and growing her family.

Williams said that she and her husband, Alexis Ohanian, planned to have another child.

“In the last year, Alexis and I have been trying to have another child, and we recently got some information from my doctor that put my mind at ease and made me feel that whenever we’re ready, we can add to our family. I definitely don’t want to be pregnant again as an athlete. I need to be two feet into tennis or two feet out.”