A great career comes to an end - and the greatest bow: Michelle Obama, Tiger Woods or LeBron James pay homage to tennis star Serena Williams.
Michelle Obama:
"Congratulations on a great career.
We were fortunate to witness a young girl from Compton grow into one of the greatest athletes of all time.
I'm proud of you my friend and I can't wait to see how you continue to transform lives with your talents."
Tiger Woods:
“You are literally the greatest on and off the field.
Thank you for inspiring us all to follow our dreams.
I love you, little sister!"
LeBron James:
"Congratulations, you've had an incredible career.
What you have done for sport and for women is unprecedented.
It was an honor to watch your journey and see you achieve all the goals you set for yourself.
Win, lose or draw: we knew you were the best.”
Magic Johnson:
"We witnessed the last US Open for the greatest of all time: Serena Williams.
Serena means so much to sport, to tennis, to the world, to every little girl and so much more to every little black girl on the planet.”
Coco Gauff:
Thank you Serena.
Because of you I believe in this dream.
The effect you have on me goes far beyond any words I can put together.
And for that I say thank you, thank you, thank you, GOAT!"
Andy Roddick:
"It was a lifetime pleasure to watch you become what you are.
I can't wait to see what you do next.
Thank you, my old friend.”
Oprah Winfrey:
"25 years.
Shero.
A legend forever.”
Simone Biles:
"Thank you for bringing the sport to a new dimension for black athletes, for athletes and for every athlete."
Angelique Kerber:
"You changed the game of tennis forever.
Through all the different phases of your career, your love for sports has always been there.
It was truly an honor to play in the era you shaped.
I'm sure you'll continue to inspire long after you've retired."