2018 Koblenz Open

The 2018 Koblenz Open was a professional tennis tournament played on indoor hard courts. It was the second edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Koblenz, Germany between 16 and 21 January 2018.

Seeds

 * 1 Rankings are as of 8 January 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇩🇪 Jan Choinski
 * 🇩🇪 Benjamin Hassan
 * 🇩🇪 Marvin Möller
 * 🇩🇪 Mats Moraing

The following players received entry into the singles main draw as alternates:
 * 🇧🇾 Ilya Ivashka
 * 🇪🇸 Tommy Robredo
 * 🇺🇦 Sergiy Stakhovsky

The following players received entry from the qualifying draw:
 * 🇧🇪 Joris De Loore
 * 🇧🇪 Christopher Heyman
 * 🇸🇰 Filip Horanský
 * 🇸🇪 Mikael Ymer

Singles

 * 🇩🇪 Mats Moraing def. 🇫🇷 Kenny de Schepper 6–2, 6–1.

Doubles

 * Romain Arneodo / 🇦🇹 Tristan-Samuel Weissborn def. Sander Arends /  Antonio Šančić 6–7(4–7), 7–5, [10–6].