2023 Kozerki Open

The 2023 Kozerki Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Grodzisk Mazowiecki, Poland between 14 and 19 August 2023.

Seeds

 * 1 Rankings were as of 7 August 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇵🇱 Tomasz Berkieta
 * 🇺🇸 Dali Blanch
 * 🇵🇱 Martyn Pawelski

The following players received entry into the singles main draw as alternates:
 * 🇬🇧 Charles Broom
 * 🇳🇴 Viktor Durasovic
 * 🇩🇪 Peter Gojowczyk

The following players received entry from the qualifying draw:
 * 🇷🇴 Marius Copil
 * 🇨🇿 David Poljak
 * 🇦🇺 Akira Santillan
 * 🇨🇴 Adrià Soriano Barrera
 * 🇨🇿 Jiří Veselý
 * 🇰🇿 Denis Yevseyev

The following player received entry as a lucky loser:
 * Stefanos Sakellaridis

Singles

 * Jesper de Jong def. Benjamin Hassan 6–3, 6–3.

Doubles

 * 🇫🇷 Théo Arribagé / 🇫🇷 Luca Sanchez def. 🇮🇳 Anirudh Chandrasekar / 🇮🇳 Vijay Sundar Prashanth 6–4, 6–4.