The 2018 Bauer Watertechnology Cup was a professional tennis tournament played on carpet courts. It was the 22nd edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Eckental, Germany between 29 October and 4 November 2018.
Singles main-draw entrants
Seeds
1 Rankings are as of 22 October 2018.
Other entrants
The following players received wildcards into the singles main draw: Kevin Krawietz Daniel Masur Rudolf Molleker Louis Wessels
The following player received entry into the singles main draw as an alternate: Alexey Vatutin
The following players received entry from the qualifying draw: Roberto Marcora Albano Olivetti Gleb Sakharov Igor Sijsling
The following players received entry as lucky losers: Benjamin Bonzi Alexander Bublik Borna Gojo
Champions
Singles
Antoine Hoang def. Ruben Bemelmans 7–5, 6–3.
Doubles
Kevin Krawietz / Andreas Mies def. Hugo Nys / Jonny O'Mara 6–1, 6–4.