2023 Saturn Oil Open

The 2023 Saturn Oil Open was a professional tennis tournament that was played on clay courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Troisdorf, Germany between 29 May and 4 June 2023.

Seeds

 * 1 Rankings are as of 22 May 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇩🇪 Mats Moraing
 * 🇩🇪 Henri Squire
 * 🇩🇪 Marko Topo

The following players received entry into the singles main draw as alternates:
 * 🇦🇷 Hernán Casanova
 * Henri Laaksonen

The following players received entry from the qualifying draw:
 * 🇫🇷 Térence Atmane
 * 🇩🇴 Nick Hardt
 * Benjamin Hassan
 * 🇧🇷 José Pereira
 * 🇪🇸 Oriol Roca Batalla
 * Robert Strombachs

The following players received entry as lucky losers:
 * 🇫🇷 Constantin Bittoun Kouzmine
 * 🇸🇪 Karl Friberg
 * 🇮🇳 Sumit Nagal
 * 🇦🇷 Renzo Olivo

Singles

 * Ivan Gakhov def. Frederico Ferreira Silva 6–2, 5–7, 6–3.

Doubles

 * 🇪🇸 Íñigo Cervantes / 🇪🇸 Oriol Roca Batalla def. 🇫🇷 Manuel Guinard / 🇫🇷 Grégoire Jacq 6–2, 7–6(7–1).