Aryna Sabalenka, the world number two, faced a surprising defeat at the China Open as she lost to Nikola Bartunkova, ranked 34th, with a score of 6-4, 6-3 in the third round on October 4, 2026. This defeat came shortly after Sabalenka's final at the US Open, where she was bested by Elena Rybakina.
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Both Sabalenka and Rybakina exited the tournament in rapid succession, marking a notable moment as the top two seeds were eliminated within a short span. Rybakina was defeated by unseeded Alina Charaeva in the second round, illustrating the unpredictable nature of the competition.
Sabalenka's loss adds to an eventful year where she and Rybakina have been closely matched, competing in three finals including two Grand Slam events. Rybakina secured the world number one ranking just before the US Open, further intensifying their rivalry.
In a previous match at the same event, Sabalenka had successfully advanced to the third round after defeating Renata Zarazua, indicating her potential before the unexpected loss to Bartunkova.