Borna Ćorić was the defending champion, but retired from his quarterfinal match against Pierre-Hugues Herbert. Roger Federer won a record-extending tenth singles title in Halle, defeating David Goffin in the final, 7–6(7–2), 6–1. Seeds Draw Finals Top half Bottom half Qualifying Seeds Qualifiers Lucky loser Miomir Kecmanović Qualifying draw First qualifier Second qualifier Third qualifier Fourth qualifier References Main draw Qualifying draw 2019 Halle Open