Koblenz CH 2023
Roman Safiullin won the title, beating Vasek Pospisil 6–2 7–5 in the final.
Main draw 32 players
- 1🇨🇳Zhizhen Zhang#156Round of 16 · Lost to Zdenek Kolar
- 2🇷🇺Roman Safiullin#74Final · Champion
- 3🇨🇦Vasek PospisilFinal · Lost to Roman Safiullin
- 4🇩🇪Maximilian MartererQuarterfinals · Lost to Raphael Collignon
- 5🇫🇷Hugo Grenier#418Round of 16 · Lost to Louis Wessels
- 6🇬🇧Liam Broady#215Round of 16 · Lost to Alexey Vatutin
- 7🇫🇷Alexandre Muller#153Quarterfinals · Lost to Zdenek Kolar
- 8🇳🇱Gijs BrouwerRound of 32 · Lost to Raphael Collignon
- Alt🇧🇪Raphael Collignon#55Semifinals · Lost to Roman Safiullin
- 🇨🇿Zdenek Kolar#204Semifinals · Lost to Vasek Pospisil
- Q🇷🇺Alexey VatutinQuarterfinals · Lost to Roman Safiullin
- Alt🇩🇪Louis Wessels#420Quarterfinals · Lost to Vasek Pospisil
- 🇧🇬Adrian AndreevRound of 16 · Lost to Maximilian Marterer
- 🇫🇷Antoine EscoffierRound of 16 · Lost to Roman Safiullin
- 🇨🇭Henri LaaksonenRound of 16 · Lost to Raphael Collignon
- 🇬🇧Jan Choinski#110Round of 16 · Lost to Alexandre Muller
- Q🇩🇪Mats RosenkranzRound of 16 · Lost to Vasek Pospisil
- 🇨🇭Antoine BellierRound of 32 · Lost to Zdenek Kolar
- Q🇫🇷Antoine HoangRound of 32 · Lost to Louis Wessels
- Alt🇩🇪Daniel Masur#351Round of 32 · Lost to Adrian Andreev
- Q🇰🇿Denis Yevseyev#469Round of 32 · Lost to Jan Choinski
- 🇺🇸Emilio Nava#121Round of 32 · Lost to Vasek Pospisil
- 🇫🇷Geoffrey Blancaneaux#444Round of 32 · Lost to Roman Safiullin
- WC🇩🇪Henri Squire#313Round of 32 · Lost to Zhizhen Zhang
- Q🇩🇪Johannes HaerteisRound of 32 · Lost to Alexey Vatutin
- 🇫🇷Laurent Lokoli#340Round of 32 · Lost to Mats Rosenkranz
- 🇮🇹Luca Nardi#263Round of 32 · Lost to Henri Laaksonen
- Alt🇩🇪Lucas GerchRound of 32 · Lost to Hugo Grenier
- WC🇩🇪Marko Topo#350Round of 32 · Lost to Antoine Escoffier
- WC🇩🇪Max Hans Rehberg#241Round of 32 · Lost to Alexandre Muller
- Alt🇳🇱Robin HaaseRound of 32 · Lost to Liam Broady
- Q🇺🇦Vitaliy Sachko#247Round of 32 · Lost to Maximilian Marterer