Elena Rybakina withdraws from WTA Finals as Marta Kostyuk steps in

World No. 1 Elena Rybakina withdrew from the 2026 WTA Finals on Saturday, November 7, just a day before the season-ending championship began in Indian Wells, California. Citing a viral illness and a body that was not physically ready to compete, the Kazakh star was forced to exit the tournament unexpectedly after securing the year-end top ranking following a stellar campaign.

Tournament director and former World No. 1 Garbiñe Muguruza stated that she had personally spoken with Rybakina. Muguruza noted that Rybakina had been feeling unwell previously in Tokyo and could not recover in time, emphasizing that the tournament prioritizes player health over forcing athletes to compete when unfit.

Rybakina's withdrawal marks a major shift in Group 1, removing the defending champion and tournament favorite from the draw. With her absence, Ukraine's Marta Kostyuk steps into the singles field as the first alternate. The 24-year-old enjoyed a breakthrough season in 2026, capturing her first WTA 1000 title in Madrid, adding a trophy in Rouen, and reaching her first Grand Slam semifinals at Roland-Garros and Wimbledon.

The shake-up in Group 1 also leaves fourth seed Coco Gauff and fifth seed Jessica Pegula separated by only three points in the race for the year-end No. 4 ranking. Gauff and Pegula are set to meet at the WTA Finals for the fourth consecutive year, continuing a familiar rivalry on the hard courts of Indian Wells. Meanwhile, Czech newcomer Linda Noskova rounds out the group, facing Kostyuk in a rematch of their Wimbledon semifinal encounter.

Group 2 features a formidable lineup of its own, including second seed Aryna Sabalenka, third seed Mirra Andreeva, sixth seed Elina Svitolina, and seventh seed Karolina Muchova. Ahead of the tournament, eight-time WTA Finals champion Martina Navratilova highlighted the tactical dynamics of the field, pointing out that players will need to carefully manage court positioning, pace, and variety on the slow courts at Indian Wells.

Rybakina's departure concludes a demanding season in which she compiled a 54-14 match record and captured four titles, including the Australian Open and the US Open. She also withdrew from the Pan Pacific Open quarterfinals in late October due to neck pain and inflammation, highlighting a mounting physical toll. She intends to spend the coming weeks resting and recovering at home to prepare for the 2027 season.

With Rybakina out, the tournament is guaranteed to crown a new champion, as no player has successfully defended the WTA Finals title since Serena Williams in 2014. The top two players from each group will advance to the semifinals, with an unbeaten champion ultimately earning 1,500 ranking points and a $3.37 million prize.