2019 MercedesCup – Singles

Roger Federer was the defending champion, but chose not to participate this year.

Matteo Berrettini won the title, defeating Félix Auger-Aliassime in the final, 6–4, 7–6(13-11). Berrettini did not lose serve through 50 service games in the tournament.

Seeds
The top four seeds receive a bye into the second round. • # 🇩🇪 Alexander Zverev (second round)

• # 🇷🇺 Karen Khachanov (second round)

• # 🇷🇺 Daniil Medvedev (second round)

• # Nikoloz Basilashvili (second round)

• # 🇫🇷 Gaël Monfils (second round)

• # 🇨🇦 Milos Raonic (semifinals, withdrew due to back injury)

• # 🇨🇦 Félix Auger-Aliassime (final)

• # 🇨🇦 Denis Shapovalov (first round)

Seeds
• # 🇮🇳 Prajnesh Gunneswaran (first round, retired)

• # 🇰🇿 Alexander Bublik (qualifying competition)

• # 🇺🇿 Denis Istomin (first round)

• # 🇨🇦 Brayden Schnur (first round)

• # 🇪🇸 Feliciano López (qualified)

• # 🇦🇺 Alexei Popyrin (qualified)

• # 🇺🇦 Sergiy Stakhovsky (qualifying competition)

• # 🇫🇷 Grégoire Barrère (qualifying competition)

Qualifiers
• # 🇦🇺 Alexei Popyrin

• # 🇪🇸 Feliciano López

• # 🇩🇪 Dustin Brown

• # Viktor Galović