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Nick Kyrgios and Costeen Hatzi Reportedly End Relationship
Australian tennis personality Nick Kyrgios and his partner, lifestyle influencer Costeen Hatzi, have reportedly separated after a relationship spanning over three years. Sources suggest the glamorous couple, prominent figures in Australian sport, experienced a growing distance leading to their split.
Lifestyle Differences Cited in Breakup
According to News Corp, diverging lifestyles were a significant factor in the dissolution of the relationship. An insider, speaking to The Daily Telegraph, described Kyrgios as someone who enjoys a lively social life.
Another source indicated that compatibility issues related to Kyrgios’ lifestyle ultimately contributed to the breakup.
Signs of Strain Emerge on Social Media
Speculation about trouble in the relationship surfaced recently when both Kyrgios and Hatzi removed each other’s initials from their Instagram biographies, a subtle but telling sign for observant followers.
Hatzi Returns to Australia Amidst Split Rumors
Adding fuel to the breakup speculation, Hatzi has reportedly returned to Australia from the United States, where she had been supporting Kyrgios. This return home without Kyrgios suggests a possible definitive separation.
Daily Mail Australia has reached out to both Kyrgios and Hatzi for official statements regarding the reported split.
From Instagram Connection to High-Profile Romance
The former couple’s relationship began in late 2021 when Kyrgios initially contacted Hatzi via Instagram regarding a mirror she was selling.
Their initial online interaction rapidly developed into a serious romantic connection, with the pair publicly acknowledging their relationship in January 2022.
Hatzi later characterized their initial connection as “love at first sight.” By May of the same year, they had solidified their commitment by moving in together in Sydney.
Hatzi’s Presence on the Tennis Circuit
Throughout their time together, Hatzi, a Sydney-based influencer and psychology graduate, became a consistent presence on the international professional tennis circuit.
She frequently accompanied Kyrgios across Europe, the United Kingdom, and the United States, offering support at numerous tournaments worldwide.
Public Displays of Affection and Shared Life
In 2023, their bond seemed particularly strong. The couple welcomed a dachshund puppy named Boo into their lives, with Hatzi sharing a photo on Instagram captioned “my family,” highlighting their growing domestic life.
Unwavering Support During Kyrgios’ Injury Challenges
Despite Kyrgios facing persistent injuries and missing the Australian Open for two consecutive years, Hatzi reportedly remained a steadfast supporter throughout his rehabilitation and recovery from surgeries.
In January 2025, she publicly expressed her admiration for Kyrgios’ resilience on the Today Show, stating, “I’ve waited so long and I’m super proud of him to get to this point,” referring to his efforts to return to professional tennis.
From Tennis Novice to Courtside Supporter
Just months prior to the reported split, Kyrgios and Hatzi were considered among Australian tennis’s most recognized couples.
Hatzi’s journey saw her transition from someone unfamiliar with professional tennis to an enthusiastic supporter, regularly seen in the stands during Kyrgios’ matches.
In Netflix’s docuseries Break Point, she openly admitted, “I never really watched a tennis game in my life, so yeah, this is all new for me,” revealing her initial unfamiliarity with the sport.
Despite her initial lack of tennis expertise, Hatzi embraced the lifestyle and was often acknowledged for having a positive and stabilizing influence on Kyrgios.
Kyrgios’ manager, Daniel Horsfall, commented on Hatzi’s impact to ESPN, stating, “I’ve seen him in previous relationships, and they perhaps were taking him in the other direction.” He added, “[Costeen] lifts him up and gives him motivation and inspiration, and she’s just a great partner to him,” emphasizing her supportive role.
Insights into Life on Tour
Earlier in the year, Hatzi provided a glimpse into her daily life while traveling with Kyrgios on tour in an interview with 9honey. She described a routine that encompassed breakfast, training sessions, and relaxation in the player’s lounge, depicting a balanced life supporting both her partner and his career.
“In my day-to-day life, Nick’s just my boyfriend,” she commented at the time, highlighting the normalcy of their relationship away from the public eye.
She also reflected on the surreal aspects of dating a globally recognized tennis player.
“And then I go to his practice and there’s so many cameras… and I’m like, ‘Oh, you’re actually a really good tennis player too’,” illustrating the blend of ordinary and extraordinary experiences.
Behind the Scenes: Pressures and Routine
While the pair shared numerous lighthearted moments, including a viral video clip, there were also indications of underlying pressures in their relationship.
Hatzi had previously mentioned that she managed all household cleaning responsibilities, stating, “Nick doesn’t have to worry about that,” suggesting a traditional division of labor within their home.
Despite acknowledging her own competitive nature, she recognized Kyrgios’ exceptional intensity.
“I don’t think that anyone is as competitive as Nick,” she had remarked in January, acknowledging his unique drive.
Hatzi’s Career and Identity
As a social media influencer and businesswoman, Hatzi collaborated with brands like Bondi Sands and expressed indifference to the “WAG” label often associated with partners of famous athletes.
“It doesn’t really bother me — I am there to support Nick — but I do my own thing as well,” she clarified, asserting her independence and professional pursuits.
Kyrgios Focuses on Tennis Comeback Amidst Split
The reported breakup coincides with Kyrgios’ ongoing efforts to return to peak performance following an extended injury absence.
At the Miami Open, Kyrgios achieved his first tour-level victory since 2022 by defeating Mackenzie McDonald, marking a positive step in his comeback journey.
However, his progress was halted by Karen Khachanov, who secured a victory in straight sets.
Kyrgios’ frustration became evident during the match, resulting in a warning from the chair umpire after he forcefully struck a ball into the stands.