# Francisco Cerundolo upset Jan-Lennard Struff at US Open

*Sports. 56% certain. Wednesday, 9 September 2026*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**Taylor Fritz beat Mattia Bellucci and Qinwen Zheng defeated Yulia Putintseva in day 3 upsets.**

Day 3 of the US Open produced several surprise results. Francisco Cerundolo defeated Jan-Lennard Struff, while Taylor Fritz overcame Mattia Bellucci and Qinwen Zheng beat Yulia Putintseva. Iga Swiatek also advanced by beating Nadia Podoroska.

The women's draw saw Swiatek, the top seed, continue her run with a straight-set victory over Podoroska. Both matches took place on the outer courts under evening lights.

In the men's section, Argentina's Cerundolo upset the experienced German Struff in a tightly contested three-set match. Alejandro Tabilo eliminated Alexei Popyrin, adding another lower-ranked triumph. Luciano Darderi secured a win against Dalibor Svrcina, rounding out the day's surprise results.

Fritz's win added to the day's upsets. The victories came from players outside the top seeds.

The tournament's schedule continued without interruption. Spectators noted the high level of competition across both draws. Alejandro Tabilo advanced by defeating Alexei Popyrin.

## Analysis

This shift can alter the balance of competition, as remaining seeded players may face opponents they had not prepared for.

Iga Swiatek's win maintains her momentum, reinforcing her status as a leading contender in the women's draw.

Such results often translate into ranking gains for the winners and can affect entry lists for upcoming tournaments.

While the immediate impact is clear, the longer-term consequences remain uncertain. The performance of these lower-ranked players will depend on their ability to sustain form against higher-seeded opponents in subsequent rounds, and any injuries or fatigue could further reshape the tournament's trajectory.

## What this was built from

- **US Open ATP: Jan-Lennard Struff vs Francisco Cerundolo**: Francisco Cerundolo, 60%; settles Wednesday, 9 September 2026 (polymarket). [Market](https://polymarket.com/event/atp-struff-cerundo-2026-09-02)
- **US Open ATP: Taylor Fritz vs Mattia Bellucci**: Taylor Fritz, 90%; settles Wednesday, 9 September 2026 (polymarket). [Market](https://polymarket.com/event/atp-fritz-bellucc-2026-09-02)
- **US Open WTA: Iga Swiatek vs Nadia Podoroska**: Iga Swiatek, 98%; settles Wednesday, 9 September 2026 (polymarket). [Market](https://polymarket.com/event/wta-swiatek-podoros-2026-09-02)
- **US Open ATP: Luciano Darderi vs Dalibor Svrcina**: Luciano Darderi, 56%; settles Wednesday, 9 September 2026 (polymarket). [Market](https://polymarket.com/event/atp-darderi-svrcina-2026-09-02)
- **US Open WTA: Qinwen Zheng vs Yulia Putintseva**: Qinwen Zheng, 71%; settles Wednesday, 9 September 2026 (polymarket). [Market](https://polymarket.com/event/wta-zhen-putints-2026-09-02)
- **US Open ATP: Alexei Popyrin vs Alejandro Tabilo**: Alejandro Tabilo, 61%; settles Wednesday, 9 September 2026 (polymarket). [Market](https://polymarket.com/event/atp-popyrin-tabilo-2026-09-02)