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The retirement annoucement by Li Na on Friday brought about an outpouring of admiration and support for the Chinese star from fans and players alike.

WTA: Li Na Retires From Tennis

Here's a sample of messages on Twitter from those who wanted to tell the world their feelings about the two-time Grand Slam champion.

The World No. 1 remembers a great champion and fighter on the court.

Congratulations to Li Na. A sad day for tennis but I'm sure your future will be bright and the star you left on our sport will never dim.

— Serena Williams (@serenawilliams) September 19, 2014

          
 A fellow French Open champion (Li won the title in 2011) showed his support as well.

Congratulations for your career and I wish you all the best in your new life #LoveLi pic.twitter.com/jinXolrJND

— Rafa Nadal (@RafaelNadal) September 19, 2014

Will miss you Li Na. #LoveLi pic.twitter.com/AvGJxlHc8v

— Aga Radwanska (@ARadwanska) September 19, 2014

One of the great WTA double champions remembers the likable Li and her classic speech she gave after winning the Australian Open.

Our sport lost a true champion today, on and off the court. Li Na you will be missed! #bestspeechesEVER

— Lisa Raymond (@lisaraymond73) September 19, 2014

Li Na, I’ll miss you on the tour. Such a fun and loving personality. It was a great honor to get to know one of the… http://t.co/wrzDF8iub7

— Jelena Jankovic (@jelena_jankovic) September 20, 2014

A future Hall of Famer remembers her many battles against Li in Melbourne.

What An honour/ pleasure it was competing against this great champion/person #linaretired pic.twitter.com/PyocvOX1on

— Kim Clijsters (@Clijsterskim) September 19, 2014

I always get a sad feeling when a great player retires. Especially when its a pioneer like Li Na. Enjoy some well earned family. #Legend

— Rob Koenig (@RobKoenigTennis) September 19, 2014

So sad to hear of the retirement of my good friend Li Na. I will miss practising with her, playing great battles.. pic.twitter.com/cc5PewruJl

— Petra Kvitova (@Petra_Kvitova) September 19, 2014

Li Na, one of the funniest and nicest players on tour! A great competitor and a role model both on and… http://t.co/fqAbGZnWMg

— Caroline Wozniacki (@CaroWozniacki) September 19, 2014

What an amazing person and champion!!! You will be missed on tour but amazing new chapter ahead of… http://t.co/DILC7LntOU

— Ana Ivanovic (@AnaIvanovic) September 19, 2014

One of the all-time greats spoke for many with her message.

Wishing LiNa a happy life after a great career. Though selfishly I wish she would play for maybe another year or two…

— Martina Navratilova (@Martina) September 19, 2014

Photo Credit: Kieran Galvin/Camerasport