Aryna Sabalenka demonstrated her trademark resilience at the Mutua Madrid Open on Monday, battling back from a set down to defeat former world number one Naomi Osaka 6-7 6-3 6-2 in the round of 16.
The Belarusian, currently ranked first in the world, found herself trailing after Osaka claimed a hard-fought opening set tiebreak.
However, Sabalenka responded emphatically, raising her level to take the second set before dominating the decider.
The victory extends her remarkable 2026 record, with only one defeat this year coming against Elena Rybakina at the Australian Open.
Aryna Sabalenka had an awkward moment with her interviewer following her victory
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She will face American Hailey Baptiste in Tuesday's quarter-final.
Baptiste secured her place in the last eight with an impressive victory over Belinda Bencic earlier in the day.
During her post-match interview, Sabalenka created an awkward moment when pressed about her ability to prevail in tight contests.
The interviewer referenced her tiger tattoo and fighting spirit before asking which aspect of her game she depends on most when matches become close.
The world number one offered a characteristically direct response: "Why should I say it, because then they (opponents) are gonna avoid that one? Honestly, I only rely on my fight spirit, that's it."
Aryna Sabalenka has lost just once this calendar year as she continues her brilliant form
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Despite the blunt exchange, Sabalenka remained cheerful throughout the remainder of her courtside chat.
The world number one was effusive in her praise for Osaka's performance and her broader comeback to professional tennis following the birth of her daughter.
"She's such an inspiration, coming back after pregnancy in a sport like tennis, it's not that easy at all, and to see her back in the top 20, for sure she's going to be top 10, it's incredible," Sabalenka said.
She added that Osaka's return "gives us hope that we can have a baby and we can come back and still play that level of tennis."
Sabalenka acknowledged she had been fortunate with several shots in the final set, crediting her opponent's aggressive play for pushing her onto the back foot throughout much of the encounter.
Naomi Osaka put on an epic showing but could not muster enough
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Speaking to Sky Sports after the match, Sabalenka reflected on her 15th consecutive victory and the factors behind her sustained excellence.
"We focus a lot on my fitness, I think I improved a lot in that part of the game and I think that's why, even if I start slow, I'm willing to find that intensity and to bring it on court," she explained.
The three-time Grand Slam champion also spoke of her motivation to entertain spectators.
"I think I have a really crazy love for this sport, and I want people to enjoy watching me play, and I want to bring the best tennis," Sabalenka said.