# Szymon Kielan ATP Challenger tournament progress

> Live situation record from CLSTR: https://clstr.news/situations/szymon-kielan-atp-challenger-tournament-progress
> Updated: 2026-09-09T15:32:48.000Z. Sources: 4. Developments: 2.

Szymon Kielan and partner Joran Vliegen advanced to the semifinals of the ATP Challenger tournament in Seville. The Polish-Belgian duo secured their position following a quarterfinal victory against Mario Mansilla Diez and Tiago Pereira, winning the match via a 10-6 super tie-break after recovering from a first-set loss.

## Timeline

### 2026-09-09: Szymon Kielan reaches Seville Challenger semifinals

Szymon Kielan and Joran Vliegen have reached the semifinals of the Seville ATP Challenger after defeating Mario Mansilla Diez and Tiago Pereira in a three-set quarterfinal match.

3 sources. https://clstr.news/cluster/szymon-kielan-reaches-seville-challenger-semifinals

### 2026-09-04: Szymon Walków wins ATP Challenger title in Porto

Szymon Walków and Sergio Martos-Gornes won the ATP Challenger 75 title in Porto, marking their fourth title of the season. Szymon Kielan reached the quarterfinals but was eliminated.

3 sources. https://clstr.news/cluster/szymon-walkw-wins-atp-challenger-title-in-porto

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Cite as: Szymon Kielan ATP Challenger tournament progress. CLSTR, https://clstr.news/situations/szymon-kielan-atp-challenger-tournament-progress