Serena Williams, one of the greatest tennis players of all time, announced that she would "evolve away from tennis" after this year's US Open.
"There comes a time in life when we have to decide to move in a different direction," Williams posted on Instagram with a picture of herself on the cover of Vogue with the title "Serena's Farewell."
Williams, 40, dominated women's tennis for much of her career. She won 23 grand slam singles titles, which is the most in the Open era and one behind the all-time record held by Margaret Court. She also won four Olympic gold medals and over $94.5 million in prize money.
She and her older sister, Venus, transformed the sport when they became professionals as teenage phenoms. They've teamed up for many grand slam doubles titles and faced off against each other in grand slam finals.
"My goodness do I enjoy tennis," Serena said on Instagram in August. "But now, the countdown has begun. I have to focus on being a mom, my spiritual goals and finally discovering a different, but just exciting Serena. I'm gonna relish these next few weeks."
Williams advanced to the third round of the US Open before she was eliminated by Australia's Ajla Tomljanović.