As Aryna Sabalenka chases a historic third consecutive U.S. Open title, the world No. 1 has her biggest supporter courtside: her fiancé, Brazilian entrepreneur Georgios Frangulis . Since they began dating in early 2024, Frangulis has been a constant presence in her player’s box, traveling the world to support the four-time Grand Slam champion. Here’s everything to know about the man who captured the tennis star’s heart.
Georgios Frangulis is a Greek-Brazilian entrepreneur and the founder and CEO of Oakberry, a global açaí franchise with over 600 locations worldwide . He and Sabalenka met in January 2024 when she became a brand ambassador for his company, and they got engaged on March 3, 2026, with a stunning 12-carat diamond ring . Frangulis is also a motorsport competitor and recently launched his own fashion brand, The Gride.
Who Is Georgios Frangulis?
A Brazilian Entrepreneur with Greek Roots
Georgios Frangulis was born and raised in São Paulo, Brazil, though he proudly embraces his Greek heritage. His grandfather hails from Thessaloniki, Greece, and Frangulis has said he “feels 100 per cent Greek” . He studied law at Fundação Armando Alvares Penteado (FAAP) in 2014 but never took the bar exam, knowing from the start that his true calling was entrepreneurship .
The Oakberry Story
In December 2016, Frangulis founded Oakberry, a superfood brand specializing in açaí bowls and smoothies sourced from the Amazon rainforest . What started as a single store in Brazil has grown into a global franchise with over 600 locations in more than 40 countries, including the United States, United Kingdom, Australia, and the United Arab Emirates . The company has become a major player in the global superfood market, even sponsoring Formula 1 events .
Frangulis overcame significant personal challenges to build his business. In 2016, he was diagnosed with thyroid cancer and underwent surgery that October. The following month, he used his insurance payout to open his first Oakberry store . Today, the brand remains deeply connected to his Brazilian heritage and commitment to sustainability.
Beyond Oakberry: Motorsport and Fashion
Frangulis isn’t just a businessman—he’s also a competitive athlete. He has competed in 128 races of the Porsche GT3 Cup Challenge and Porsche Carrera Cup Brasil . The former racing driver has described being on the track as “one of the few moments when nothing else matters” .
Earlier this year, Frangulis launched his own fashion brand, The Gride—a name combining “Greek” and “Pride”—celebrating his heritage . He has also co-owned Le Mans FC, expanding his entrepreneurial portfolio into football .
A Whirlwind Romance
From Brand Ambassador to Fiancée
Sabalenka and Frangulis first met in January 2024 when she was hired as a global ambassador for Oakberry . Their professional relationship quickly blossomed into romance.
“We signed the contract, then we got to know each other and somehow we ended up being together,” Sabalenka later explained .
They were first spotted together at the Mutua Madrid Open in April 2024, just a month after Sabalenka’s ex-boyfriend, Konstantin Koltsov, tragically passed away . Frangulis became a pillar of support during her grief, with Sabalenka later telling PEOPLE: “There was a really tough period where I was really happy to have him by my side, always cheering me up, always making sure that we are doing some fun stuff” .
The Engagement
After dropping several public hints—including a victory speech at the Brisbane International where she said, “Thank you to my boyfriend… hopefully soon I can call you something else” —Frangulis finally proposed on March 3, 2026 .
The romantic outdoor proposal took place at a rental home in Indian Wells, California, the same place where the couple had spent time early in their relationship . The scene was set with hundreds of floral displays and candles by the pool . Sabalenka announced the news with a joint Instagram post captioned: “You & me, forever ♾️ 3.3.26 💍🤍” .
The 12-Carat Ring
The engagement ring has become almost as famous as the couple themselves. The custom piece features a 12-carat oval-cut diamond set in platinum, surrounded by emerald accents—a personal touch, as emeralds are Sabalenka’s favorite stone .
The ring was designed by Isabela Grutman of ISA Grutman Jewelry, who worked closely with Frangulis for months to perfect the design . Jewelry experts estimate its value between $500,000 and $1 million .
Sabalenka later joked about the ring’s size, admitting she’d “requested 14 but I got 12” carats . Frangulis explained that a 15-carat stone would have been “too tacky and too expensive” .
A Supportive Partnership
Frangulis has become a fixture in the stands at Sabalenka’s matches, from the Madrid Open to the Cincinnati Masters and the U.S. Open . Their relationship provides a grounding influence on the world No. 1.
“His support means so much to me,” Sabalenka told Us Weekly. “Being on the road and having him support me, to make me laugh and to be able to work out together, makes life on the road feel more like home” .
For Frangulis, the connection goes beyond supporting her career: “It doesn’t matter where we are, and it doesn’t matter what hotel room we’re at; it feels like home because I’m with her” .
Frequently Asked Questions
Who is Aryna Sabalenka’s fiancé?
Aryna Sabalenka’s fiancé is Georgios Frangulis, a Greek-Brazilian entrepreneur and founder of Oakberry, a global açaí franchise .
How did Aryna Sabalenka and Georgios Frangulis meet?
They met in January 2024 when Sabalenka became a brand ambassador for Frangulis’s company, Oakberry .
When did Aryna Sabalenka get engaged?
Frangulis proposed on March 3, 2026 .
What does Georgios Frangulis do?
He is the founder and CEO of Oakberry, a motorsport competitor, co-owner of Le Mans FC, and founder of the fashion brand The Gride .
How big is Aryna Sabalenka’s engagement ring?
The ring features a 12-carat oval-cut diamond with emerald accents, estimated to be worth between $500,000 and $1 million .
Conclusion
Georgios Frangulis is more than just Aryna Sabalenka’s fiancé. He’s a successful entrepreneur who built a global superfood empire, a former racing driver, a fashion brand founder, and most importantly, a devoted partner who has been Sabalenka’s rock through both triumphs and grief. Their love story—from a business partnership to an engagement with a jaw-dropping 12-carat ring—is a testament to finding the right person when you least expect it. As the couple prepares for their wedding, Sabalenka will continue to dominate the tennis world with her biggest fan cheering her on from the stands .