The 2023 Oeiras Indoors was a professional tennis tournament played on hard courts. It was the 1st edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal from 2 to 8 January 2023.
Singles main-draw entrants Seeds Country Player Rank1 SeedRičardas Berankis1681Jay Clarke2402Matteo Gigante2503Hamad Međedović2554Aziz Dougaz2735Maximilian Neuchrist2746Máté Valkusz2757Raphaël Collignon2808 1 Rankings are as of 26 December 2022.
Other entrants The following players received wildcards into the singles main draw: Jaime Faria Gonçalo Oliveira Pedro Sousa
The following players received entry from the qualifying draw: Joris De Loore Kenny de Schepper Cem İlkel Alibek Kachmazov Mark Lajal Dino Prižmić
The following player received entry as a lucky loser: Edan Leshem
Champions Singles
Joris De Loore def. Filip Cristian Jianu 6–3, 6–2.
Doubles
Victor Vlad Cornea / Petr Nouza def. Jonathan Eysseric / Pierre-Hugues Herbert 6–3, 7–6(7–3).
References