2019 Rosmalen Grass Court Championships – Men's Singles
was the defending champion, but lost to Jordan Thompson in the semifinals.
Adrian Mannarino won his first ATP Tour title in his seventh final, defeating Thompson in the final, 7–6, 6–3.Seeds
The top four seeds receive a bye into the second round.Draw
Finals
Seeds
Qualifiers
- Thomas Fabbiano
Qualifying draw
Second qualifier
Third qualifier