2018 Sparkassen Open

The 2018 Sparkassen Open was a professional tennis tournament played on clay courts. It was the 25th edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Braunschweig, Germany between 9 and 14 July 2018.

Seeds

 * 1 Rankings are as of 2 July 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇷 Thomaz Bellucci
 * 🇪🇸 Nicola Kuhn
 * 🇩🇪 Daniel Masur
 * 🇩🇪 Rudolf Molleker

The following players received entry into the singles main draw as alternates:
 * Martín Cuevas
 * 🇧🇪 Arthur De Greef

The following players received entry from the qualifying draw:
 * 🇧🇪 Kimmer Coppejans
 * 🇫🇷 Maxime Janvier
 * 🇩🇪 Marvin Netuschil
 * 🇨🇿 Jan Šátral

The following player received entry as a lucky loser:
 * 🇷🇴 Dragoș Dima

Singles

 * 🇩🇪 Yannick Hanfmann def. 🇸🇰 Jozef Kovalík 6–2, 3–6, 6–3.

Doubles

 * 🇲🇽 Santiago González / Wesley Koolhof def. 🇮🇳 Sriram Balaji / 🇮🇳 Vishnu Vardhan 6–3, 6–3.