2018 Gerry Weber Open

The 2018 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 26th edition of the event and part of the ATP World Tour 500 series of the 2018 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 18 June and 24 June 2018. Unsedeed Borna Ćorić won the singles title.

Prize money

 * per team

Seeds

 * 1 Rankings are as of June 11, 2018

Other entrants
The following players received wildcards into the singles main draw: The following players received as a special exempt:
 * 🇩🇪 Maximilian Marterer
 * 🇩🇪 Florian Mayer
 * 🇩🇪 Rudolf Molleker
 * 🇦🇺 Matthew Ebden

The following players received entry from the qualifying draw:
 * 🇩🇪 Matthias Bachinger
 * 🇺🇸 Denis Kudla
 * 🇸🇰 Lukáš Lacko
 * 🇷🇺 Mikhail Youzhny

The following players received entry as lucky losers:
 * 🇮🇹 Matteo Berrettini
 * Nikoloz Basilashvili

Withdrawals

 * Before the tournament
 * 🇰🇷 Chung Hyeon → replaced by 🇩🇪 Jan-Lennard Struff
 * 🇺🇸 John Isner → replaced by 🇭🇺 Márton Fucsovics
 * 🇪🇸 Albert Ramos Viñolas → replaced by 🇮🇹 Matteo Berrettini
 * 🇷🇺 Andrey Rublev → replaced by 🇹🇳 Malek Jaziri
 * 🇩🇪 Peter Gojowczyk → replaced by Nikoloz Basilashvili

Seeds

 * 1 Rankings are as of June 11, 2018

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇩🇪 Philipp Kohlschreiber / 🇩🇪 Philipp Petzschner
 * 🇩🇪 Jan-Lennard Struff / 🇩🇪 Tim Pütz

The following pair received entry from the qualifying draw:
 * 🇮🇱 Jonathan Erlich / 🇺🇸 Nicholas Monroe

Singles

 * Borna Ćorić defeated Roger Federer, 7–6(8–6), 3–6, 6–2

Doubles

 * 🇵🇱 Łukasz Kubot / 🇧🇷 Marcelo Melo defeated 🇩🇪 Alexander Zverev / 🇩🇪 Mischa Zverev, 7–6(7–1), 6–4