The 2023 Ostra Group Open was a professional tennis tournament played on clay courts. It was the 20th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 24 and 30 April 2023.

Singles main-draw entrants Seeds Country Player Rank1 SeedRyan Peniston1581Ivan Gakhov1622Vít Kopřiva1653Geoffrey Blancaneaux1754Alejandro Tabilo1765Riccardo Bonadio1796Oleksii Krutykh1807Damir Džumhur2028Dalibor Svrčina2039 1 Rankings are as of 17 April 2023.

Other entrants The following players received wildcards into the singles main draw: Jakub Menšík Gaël Monfils Jiří Veselý

The following players received entry into the singles main draw as alternates: Shintaro Mochizuki Vitaliy Sachko

The following players received entry from the qualifying draw: Guido Andreozzi Àlex Martí Pujolràs Rudolf Molleker Patrik Rikl Henri Squire Khumoyun Sultanov

Champions Singles

Zdeněk Kolář def. Máté Valkusz 6–3, 6–2.

Doubles

Robert Galloway / Miguel Ángel Reyes-Varela def. Guido Andreozzi / Guillermo Durán 7–5, 7–6(7–5).

References