2019 Sparkassen Open – Singles

Yannick Hanfmann was the defending champion but lost in the second round to Casper Ruud.

Thiago Monteiro won the title after defeating Tobias Kamke 7–6(8–6), 6–1 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇳🇴 Casper Ruud (quarterfinals)

• # 🇧🇴 Hugo Dellien (second round)

• # Henri Laaksonen (semifinals)

• # 🇮🇹 Stefano Travaglia (second round)

• # 🇵🇱 Kamil Majchrzak (third round)

• # 🇧🇷 Thiago Monteiro (champion)

• # 🇸🇪 Elias Ymer (second round)

• # 🇪🇸 Pedro Martínez (second round)

• # 🇨🇿 Lukáš Rosol (quarterfinals)

• # 🇦🇹 Sebastian Ofner (second round)

• # 🇮🇹 Gianluca Mager (third round)

• # 🇧🇪 Kimmer Coppejans (second round)

• # 🇩🇪 Rudolf Molleker (second round)

• # 🇩🇪 Dustin Brown (withdrew)

• # 🇩🇪 Oscar Otte (second round, retired)

• # 🇦🇷 Marco Trungelliti (third round)