The former First Lady of the United States, Michelle Obama, wrote on Twitter, “Congrats on an amazing career, @SerenaWilliams!

“How lucky were we to be able to watch a young girl from Compton grow up to become one of the greatest athletes of all time. I’m proud of you, my friend—and I can’t wait to see the lives you continue to transform with your talents.”

LATEST NEWS NIGERIA reports that Serena Williams suffered a likely career-ending defeat when she was knocked out of the US Open on Friday by Australia’s Ajla Tomljanovic.

The 23-time Grand Slam title winner and six-time champion in New York, lost her third round clash 7-5, 6-7 (4/7), 6-1.

Williams, announced via an Instagram post in August that “the countdown has begun” to her retirement from the sport.

“There comes a time in life when we have to decide to move in a different direction. That time is always hard when you love something so much. My goodness do I enjoy tennis. 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,” she wrote.