The tennis world was in shock after Ashleigh Barty announced her retirement from the sport on Wednesday. The 25-year-old's decision comes just two months after she won the Australian Open without dropping a set. Barty won three Grand Slam titles in total, each on a different surface. The 25-year-old had an exceptional career on the doubles circuit as well, winning the 2018 US Open with Coco Vandeweghe. She also took home the bronze medal in the mixed doubles event at the Tokyo Olympics last year.In her retirement statement, the Australian said she had achieved all that she wanted in tennis and that she had nothing left to give the sport. Her announcement clearly rocked the tennis world, and a number of players paid tribute to Barty. Former World No. 1 Simona Halep had a heart-warming message for her "special" friend."Ash, what can I say, you know I have tears right? My friend, I will miss you on tour," Halep tweeted. "You were different, and special, and we shared some amazing moments. What's next for you? Grand Slam champion in golf?! Be happy and enjoy your life to the max xo Simo"Simona Halep@Simona_HalepAsh, what can I say, you know I have tears right? My friend, I will miss you on tour. You were different, and special, and we shared some amazing moments. What's next for you? Grand Slam champion in golf?! Be happy and enjoy your life to the max xo Simo@ashbarty8:16 AM · Mar 23, 202211978921Ash, what can I say, you know I have tears right? My friend, I will miss you on tour. You were different, and special, and we shared some amazing moments. What's next for you? Grand Slam champion in golf?! Be happy and enjoy your life to the max xo Simo@ashbarty https://t.co/WbX7kXnJ1lTwo-time Wimbledon champion Petra Kvitova praised Barty for showing "true class" and said "tennis will never be the same without you.""Ash, I have no words... actually you are showing your true class leaving tennis in this beautiful way," Kvitova said. "I am so happy I could share the court with you.. tennis will never be the same without you! I admire you as a player and a person.. wishing you only the best!"Petra Kvitova@Petra_KvitovaAsh, I have no words... actually you are showing your true class leaving tennis in this beautiful way. I am so happy I could share the court with you.. tennis will never be the same without you! I admire you as a player and a person.. wishing you only the best! @ashbarty8:11 AM · Mar 23, 20226963453Ash, I have no words... actually you are showing your true class leaving tennis in this beautiful way. I am so happy I could share the court with you.. tennis will never be the same without you! I admire you as a player and a person.. wishing you only the best! ❤️@ashbartyKarolina Pliskova, who Barty beat to win Wimbledon last year, wished the Australian the best in the next chapter of her life."Congrats on an incredible career Ash," Pliskova wrote. "It was a privilege to share a court with you. Wishing you all the best in your next chapter, @ashbarty. You will be missed."Karolina Pliskova@KaPliskovaCongrats on an incredible career Ash It was a privilege to share a court with you. Wishing you all the best in your next chapter, @ashbarty. You will be missed 🥺8:15 AM · Mar 23, 20224458265Congrats on an incredible career Ash 🙏 It was a privilege to share a court with you. Wishing you all the best in your next chapter, @ashbarty. You will be missed 🥺❤️ https://t.co/bpL20nIUJQandyroddick@andyroddickWow twitter.com/tennischannel/…Tennis Channel@TennisChannelBREAKING: World No. 1 @ashbarty announces retirement.8:09 AM · Mar 23, 202267232BREAKING: World No. 1 @ashbarty announces retirement. https://t.co/Ro1IQ4LDbqWow twitter.com/tennischannel/…Compatriot Dylan Alcott called Barty a great tennis player but an "even better person."Ash Barty. Amazing tennis player but even better person. A champion in every sense of the word. Very proud of you mate," he tweeted.Dylan Alcott@DylanAlcottAsh Barty. Amazing tennis player but even better person. A champion in every sense of the word. Very proud of you mate 8:52 AM · Mar 23, 20224964269Ash Barty. Amazing tennis player but even better person. A champion in every sense of the word. Very proud of you mate ❤️Sania Mirza@MirzaSaniaWhat a legend @ashbarty .. tennis will miss you .. unbelievable role model on and off the court .. good luck mate for this next phase 🏽 #inspiration9:04 AM · Mar 23, 20221563101What a legend @ashbarty .. tennis will miss you .. unbelievable role model on and off the court .. good luck mate for this next phase 👏🏽 #inspirationTennisAustralia@TennisAustraliaCongratulations on an incredible career, @ashbarty The tennis community, especially in Australia, will miss you dearly but is all the better for the standard you set as a person and a player. Forever a world No.1 role model 8:31 AM · Mar 23, 20221894319Congratulations on an incredible career, @ashbarty 💙The tennis community, especially in Australia, will miss you dearly but is all the better for the standard you set as a person and a player. Forever a world No.1 role model 🏆 https://t.co/oQ8HHgUFIJ"Happy for Ashleigh Barty, gutted for tennis" - Andy MurrayAndy Murray also paid tribute to Ashleigh BartyFormer World No. 1 Andy Murray tweeted that while he was happy for Barty, her retirement was a big loss for tennis."Happy for @ashbarty gutted for tennis. What a player," Murray wrote.wta@WTAFor every young girl that has looked up to you.For every one of us that you've inspired.For your love of the game.Thank you, @ashbarty for the incredible mark you've left on-court, off-court and in our hearts 7:58 AM · Mar 23, 202273711415For every young girl that has looked up to you.For every one of us that you've inspired.For your love of the game.Thank you, @ashbarty for the incredible mark you've left on-court, off-court and in our hearts 💜 https://t.co/6wp9fmO439The Australian retired from the sport, having held the No. 1 ranking for 113 consecutive weeks (120 overall), behind only Steffi Graf (186 weeks), Serena Williams (186 weeks) and Martina Navratilova (156 weeks).Ashleigh Barty's absence from the WTA tour will be keenly felt in the weeks and months to come.