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In November, Tabur recorded his first [[ATP Tour]] win at the [[2025 Moselle Open – Singles|Moselle Open]] in Metz, France. He reached the main draw as a qualifier, having received a wildcard for the qualifying rounds. In the first round, he defeated [[Aleksandar Kovacevic (tennis)|Aleksandar Kovacevic]], his first top 100 win.[{{Cite web|url=https://www.lequipe.fr/Tennis/Actualites/Clement-tabur-apres-sa-meilleure-victoire-en-carriere-au-premier-tour-de-l-atp-250-de-metz-j-ai-reussi-a-me-faire-confiance-a-100/1606934|title=Clément Tabur après sa meilleure victoire en carrière au premier tour de l'ATP 250 de Metz : « J'ai réussi à me faire confiance à 100 % »|website=L'Équipe|date=3 November 2025|language=fr}}] In the second round, he defeated [[Alexander Blockx]] to reach his first [[ATP Tour]] quarterfinal.[{{Cite web|url=https://www.lequipe.fr/Tennis/Actualites/Clement-tabur-poursuit-sa-folle-aventure-a-metz-en-battant-le-belge-alexander-blockx-pour-rallier-les-quarts-de-finale/1607529|title=Clément Tabur poursuit sa folle aventure à Metz en battant le Belge Alexander Blockx pour rallier les quarts de finale|website=L'Équipe|date=5 November 2025|language=fr}}] He lost to lucky loser [[Vitaliy Sachko]] having defeated him in qualifying.[ {{cite web|url=https://en.tennistemple.com/actu/there-are-many-good-things-to-take-away/EAZA|title= "There are many good things to take away," says Tabur after his quarter-final defeat in Metz| date=7 November 2025}}] |
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In November, Tabur recorded his first [[ATP Tour]] win at the [[2025 Moselle Open – Singles|Moselle Open]] in Metz, France. He reached the main draw as a qualifier, having received a wildcard for the qualifying rounds. In the first round, he defeated [[Aleksandar Kovacevic (tennis)|Aleksandar Kovacevic]], his first top 100 win.[{{Cite web|url=https://www.lequipe.fr/Tennis/Actualites/Clement-tabur-apres-sa-meilleure-victoire-en-carriere-au-premier-tour-de-l-atp-250-de-metz-j-ai-reussi-a-me-faire-confiance-a-100/1606934|title=Clément Tabur après sa meilleure victoire en carrière au premier tour de l'ATP 250 de Metz : « J'ai réussi à me faire confiance à 100 % »|website=L'Équipe|date=3 November 2025|language=fr}}] In the second round, he defeated [[Alexander Blockx]] to reach his first [[ATP Tour]] quarterfinal.[{{Cite web|url=https://www.lequipe.fr/Tennis/Actualites/Clement-tabur-poursuit-sa-folle-aventure-a-metz-en-battant-le-belge-alexander-blockx-pour-rallier-les-quarts-de-finale/1607529|title=Clément Tabur poursuit sa folle aventure à Metz en battant le Belge Alexander Blockx pour rallier les quarts de finale|website=L'Équipe|date=5 November 2025|language=fr}}] He lost to lucky loser [[Vitaliy Sachko]] having defeated him in qualifying.[ {{cite web|url=https://en.tennistemple.com/actu/there-are-many-good-things-to-take-away/EAZA|title= "There are many good things to take away," says Tabur after his quarter-final defeat in Metz| date=7 November 2025}}] |
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In April, Tabur won his maiden [[ATP Challenger Tour|Challenger]] title at the Tallahassee Challenger, defeating Reis Da Silva in the final. |
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In April, Tabur won his maiden [[ATP Challenger Tour|Challenger]] title in [[2026 Tallahassee Tennis Challenger|Tallahassee]], defeating [[João Lucas Reis da Silva]] in the final. |