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.

[1] The top four seeds receive a bye into the second round.