The 2023 Open de Oeiras was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal between 17 and 23 April 2023.

Singles main-draw entrants Seeds Country Player Rank1 SeedAdrian Mannarino471Alexandre Müller962Sebastian Ofner1203Juan Manuel Cerúndolo1234João Sousa1465Kaichi Uchida1606Zsombor Piros1677Andrea Vavassori1768 1 Rankings are as of 10 April 2023.

Other entrants The following players received wildcards into the singles main draw: Henrique Rocha Pedro Sousa Duarte Vale

The following player received entry into the singles main draw as a special exempt: Zsombor Piros

The following player received entry into the singles main draw as an alternate: João Domingues

The following players received entry from the qualifying draw: Cezar Crețu Jaime Faria Billy Harris Pablo Llamas Ruiz Daniel Mérida Petr Nouza

The following player received entry as a lucky loser: Henri Squire

Champions Singles

Zsombor Piros def. Juan Manuel Cerúndolo 6–3, 6–4.

Doubles

Victor Vlad Cornea / Franko Škugor def. Marcelo Demoliner / Andrea Vavassori 7–6(7–2), 7–6(7–4).

References