Key Takeaways
- Nikola Bartunkova eliminated world No. 2 Aryna Sabalenka 6-4, 6-3 in the third round of the China Open.
- Sabalenka converted zero of her five break points, while Bartunkova saved all five in the first set and never faced a break point in the second set.
- The result means the top two seeds failed to reach the Beijing round of 16 for the first time since 2015, following Elena Rybakina’s exit.
Nikola Bartunkova eliminates world No. 2 Aryna Sabalenka in straight sets
Just 1 day after world No. 1 Elena Rybakina exited the China Open, world No. 2 Aryna Sabalenka met the same fate. Sabalenka was sent packing in the Beijing 3rd round on Sunday, falling 6-4, 6-3 to Czech 26th seed Nikola Bartunkova in 1 hour and 35 minutes.
Bartunkova, sitting at a career-high ranking of world No. 34, took charge immediately by breaking Sabalenka’s serve in the opening game. The 20-year-old Czech demonstrated remarkable composure in a tense 6th game, repelling 5 break points to protect her lead at 4-2. While she could not convert 3 opportunities to secure a double break in the following game, Bartunkova held her next 2 service games to love to take the opening set 6-4.
The Czech carried that momentum straight into the 2nd set, earning an early break to build a 3-1 lead. Bartunkova did not face a single break point throughout the 2nd set and sealed the upset by breaking Sabalenka again in the 9th game.
The defining statistics behind the Beijing upset
Bartunkova’s composed display produced several notable statistical milestones across both players’ campaigns.
| Metric | Total | Context |
|---|---|---|
| Sabalenka break points converted | 0 | Converted 0 of 5 break opportunities, all coming in the first set |
| Bartunkova WTA 1000 last-16 runs | 2 | Matches her career-best WTA 1000 run in Rome |
| Bartunkova Top 10 victories | 2 | Second career Top 10 win, following Belinda Bencic at the 2026 Australian Open |
| Sabalenka Beijing quarterfinal appearances | 3 | Reached the final eight in 2018, 2023, and 2024, but has never made the semifinals |
| Sabalenka consecutive losses after dropping set 1 | 6 | Has dropped 6 straight matches after losing the opening set |
| Years since top 2 seeds missed Beijing last 16 | 12 | Last occurred in 2015 when Simona Halep and Petra Kvitova lost early |
| Bartunkova match wins in 2026 | 22 | Marks her most successful tour season, including 16 hard-court wins |
| Sabalenka matches vs opponents outside Top 20 | 24 | Only her second loss of 2026 against players ranked outside the Top 20 |
What awaits Nikola Bartunkova in the last 16
The upset marked Bartunkova’s 22nd victory of the season and her 16th on hard courts. Her career record against Top 10 opposition now stands at 2-5, while Sabalenka fell to 3-7 on the year when dropping the opening set.
Bartunkova advances to face Austria’s Sinja Kraus for a place in the China Open quarterfinals. Kraus earned her spot in the round of 16 with a 6-1, 6-4 victory over Dayana Yastremska. Bartunkova holds a 1-0 head-to-head advantage over Kraus, having beaten her at Hechingen in 2025.
Aryna Sabalenka in 2026
Currently the world no.2, Aryna played her last match on the 4th of October when she lost to world no.34 Nikola Bartunkova 6-4 6-3 in the 3rd round in Beijing (draw).
Presently, during this year the Belarussian owns a composed 47-11 win-loss record. The Belarussian clinched 3 titles in 2026 in Brisbane, Indian Wells and Miami.
