On a cool California evening under the stadium lights at Indian Wells Tennis Garden, Sonay Kartal delivered a performance that few saw coming, stunning home favorite Madison Keys with a gritty three-set comeback to advance to the fourth round of the 2026 BNP Paribas Open. In front of an enthusiastic crowd, the British number two overcame both a slow start and lingering back pain to topple the former Australian Open champion, 2-6, 6-2, 6-3, in just under two hours.
Entering this third-round clash, most eyes were on Keys, the world No. 15 and 2025 Australian Open winner, who was favored by bookmakers and predictive models alike. Keys, who reached the Indian Wells semifinals just last year and enjoyed a steady start to the new season with quarterfinal runs in Brisbane and Adelaide, had already dispatched Diane Parry 6-4, 6-3 in her opening match. Her powerful first-strike tennis and home-court advantage seemed to set the stage for another deep run.
Kartal, ranked No. 54, had quietly built momentum with back-to-back wins in the desert—her first such streak since reaching the quarterfinals in Abu Dhabi earlier in the year. Her path to the third round included a dramatic victory over Emma Navarro, where she saved a match point and battled through a tense final set tie-break. Yet, even with these heroics, few expected Kartal to topple a player of Keys’ caliber, especially given their head-to-head record: Keys had previously beaten Kartal in straight sets at Wimbledon 2023, 6-0, 6-3.
The contest began as many predicted, with Keys dictating play and racing through the first set 6-2. The American’s serve and forehand were firing, and she appeared every bit the favorite that both oddsmakers and machine learning models had projected. According to Dimers’ predictive analytics, Keys had a 63% chance of winning the match and a 60% chance of taking the opening set, with betting odds heavily in her favor at -188 on the moneyline.
But Kartal, showing the tenacity that’s defined her recent rise, refused to fold. Despite struggling with a back injury that had forced her to call a medical timeout in her previous match, she found another gear. "At times in this match I was in discomfort with my back, so it’s a match like today which shows the fighter in me," Kartal told BBC Sport after her win. She added, "On these courts I do feel I can beat anyone on any given day."
The second set saw a dramatic momentum shift. Kartal began to vary her shots, mixing in slices and drop shots to disrupt Keys’ rhythm. Her defensive skills produced longer rallies, and she capitalized on a series of unforced errors from the American to level the match 6-2. The crowd, initially behind their home favorite, started to buzz as the upset alert sounded. Kartal’s resilience was on full display, especially considering the physical toll of her previous matches and the fact that she had not practiced the day before, prioritizing recovery for her back.
"It [the back] was a pretty big hindrance," Kartal explained. "I didn’t really practise yesterday so I gave it as much recovery as I could, so I think now it’s about getting recovered and doing the same exact thing to get back on the court in the next couple of days."
The deciding set unfolded as a tense, back-and-forth battle. Both players traded early breaks, but it was Kartal who seized control, breaking Keys’ serve and consolidating with confident holds. The detailed point-by-point summary of the match reflected just how close and competitive the exchanges became, with multiple games stretching to deuce and both players saving break points under pressure.
Ultimately, it was Kartal’s ability to withstand Keys’ power and keep her composure in the key moments that made the difference. As the final game approached, Kartal held her nerve, closing out the match 6-3 in the third set to seal one of the most impressive wins of her career. With this victory, she not only avenged her previous loss to Keys but also became the first British woman to reach the fourth round at Indian Wells twice—a remarkable achievement in a tournament known for its depth and unpredictability.
Kartal’s breakthrough at Indian Wells last year, which marked her debut at a WTA 1,000 event, had already set her on a path to a career-high ranking of 44 in 2025. This latest run cements her reputation as a hard-court battler capable of upsetting even the biggest names in the sport. Her victory over the 15th seed also sets up a tantalizing round of 16 clash against Kazakhstan’s Elena Rybakina, the reigning Australian Open champion.
Looking ahead, Kartal is focused on recovery and preparation for her next challenge. The British player emphasized the importance of managing her back injury, stating, "I think now it’s about getting recovered and doing the same exact thing to get back on the court in the next couple of days." Her fighting spirit and ability to adapt under pressure have already made her one of the standout stories of this year’s tournament.
The Monday night session at Indian Wells was packed with drama beyond Kartal’s upset. Czech player Katerina Siniakova ousted defending champion Mirra Andreeva in a marathon three-setter, while third seed Rybakina and world number two Iga Swiatek both advanced to the last 16. American fifth seed Jessica Pegula also staged a comeback of her own, rallying from a set down to defeat Jelena Ostapenko.
For Madison Keys, the loss marks another disappointing exit following her fourth-round defeat at the Australian Open. Despite her powerful game and the backing of the home crowd, she was unable to maintain the consistency that carried her through the opening set. Keys will look to regroup as the WTA tour heads into the spring hard-court swing, while Kartal’s star continues to rise.
As the dust settles in the California desert, Sonay Kartal’s victory stands as a testament to perseverance, tactical adaptability, and sheer willpower. With her place in the fourth round secured, all eyes will be on her next match as she aims to extend her historic run even further.