Fresh off winning the US Open 2025, Aryna Sabalenka isn’t done celebrating yet. The world No. 1 just finished toasting her incredible victory, but now she’s got another reason to party. September 9 brings another special moment: her boyfriend Georgios Frangulis’s birthday.
How Did Aryna Sabalenka Celebrate Georgios Frangulis’s Birthday?
Sabalenka took to Instagram stories to share her love for Frangulis on his special day. The tennis champion posted multiple photos capturing the couple kissing, hugging, and enjoying time together in various locations.
She wrote a heartfelt message that read “Happy birthday to my love @georgiosfrangulis ❤️ my favorite person to do everything with (especially take pictures) 🥰.” In another post, she added “you and me ∞ I love you endlessly @georgiosfrangulis.”


The couple has been together since early 2024, following the tragic death of her ex-boyfriend Konstantin Koltsov. Frangulis brought happiness back into her life during a difficult time. He actively supports Sabalenka’s tennis career, traveling worldwide to watch her compete in tournaments. The Brazilian businessman founded Oakberry, where Sabalenka serves as brand ambassador.
This birthday celebration feels particularly meaningful because of the timing. Last year, Sabalenka won the US Open on September 7, 2024. Days later, it was Frangulis’s birthday. This year, the same perfect sequence happened: She defended her US Open title on September 6, and now she gets to celebrate his birthday again on September 9.
What Made This US Open Victory So Special?
Sabalenka’s recent US Open triumph makes this birthday celebration even sweeter. In the final, she defeated Amanda Anisimova with scores of 6-3, 7-6, becoming the first woman to win two consecutive US Open titles since Serena Williams accomplished the feat in 2014.
Immediately after winning the match, Sabalenka rushed into the crowd to kiss Frangulis. She has spoken previously about how his support energizes her performance on court, while Frangulis revealed his unique approach to supporting her during matches.
Aryna Sabalenka and her boyfriend Georgios Frangulis share a heartfelt moment after she won her 2nd U.S. Open title.
Love… nothing else like it. 🥹
pic.twitter.com/mehrsUcouZ
— The Tennis Letter (@TheTennisLetter) September 6, 2025
The tennis star has opened up about how Frangulis helped her through challenging periods in her life. “There was a really tough period where I was really happy to have him by my side, always cheering me up,” she told reporters. His presence at her matches gives her extra motivation to perform her best.
