2019 Koblenz Open

The 2019 Koblenz Open was a professional tennis tournament played on indoor hard courts. It was the third edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Koblenz, Germany between 14 and 20 January 2019.

Seeds

 * 1 Rankings are as of 7 January 2019.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇿 Marek Gengel
 * 🇩🇪 Johannes Härteis
 * 🇩🇪 Benjamin Hassan
 * 🇩🇪 Kai Lemstra
 * 🇩🇪 Julian Lenz

The following player received entry into the singles main draw using a protected ranking:
 * 🇵🇱 Michał Przysiężny

The following players received entry into the singles main draw using their ITF World Tennis Ranking:
 * 🇪🇸 Javier Barranco Cosano
 * 🇮🇹 Raúl Brancaccio
 * 🇩🇪 Peter Heller
 * 🇷🇺 Roman Safiullin

The following players received entry from the qualifying draw:
 * 🇩🇪 Peter Torebko
 * 🇩🇪 Louis Wessels

The following players received entry as lucky losers:
 * 🇮🇹 Riccardo Bonadio
 * 🇩🇪 Bastien Presuhn

Singles

 * 🇮🇹 Gianluca Mager def. 🇪🇸 Roberto Ortega Olmedo 2–6, 7–6(8–6), 6–2.

Doubles

 * 🇨🇿 Zdeněk Kolář / 🇨🇿 Adam Pavlásek def. 🇦🇹 Jürgen Melzer / 🇸🇰 Filip Polášek 6–3, 6–4.