Men's singles
2019 Libéma Open
Champion	Adrian Mannarino
Runner-up	Jordan Thompson
Score	7–6(9–7), 6–3
Draw	28 (4 Q / 3 WC )
Seeds	8

Adrian Mannarino defeated Jordan Thompson in the final, 7–6^(9–7), 6–3 to win the men's singles tennis title at the 2019 Rosmalen Grass Court Championships. It was Mannarino's maiden ATP Tour singles title in his seventh final. Thompson was also contesting for his maiden title.^[1]

Richard Gasquet was the defending champion, but lost to Thompson in the semifinals.^[2]

Seeds

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

Draw

Finals

	Semifinals							Final
	8	Richard Gasquet	5	3
		Jordan Thompson	7	6
									Jordan Thompson	67	3
									Adrian Mannarino	79	6
		Adrian Mannarino	4	6	77
	2/WC	Borna Ćorić	6	3	64

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	S Tsitsipas	4	6	4
	Q	J Sinner	64	3					N Jarry	6	3	6
		N Jarry	77	6												N Jarry	68	4
		L Sonego	7	4	4										8	R Gasquet	710	6
		M Kukushkin	5	6	6				M Kukushkin	4	3
		A Bedene	77	65	4			8	R Gasquet	6	6
	8	R Gasquet	63	77	6																	8	R Gasquet	5	3
																							J Thompson	7	6
								3	A de Minaur	7	6
	LL	T Fabbiano	610	5					A Seppi	5	3
		A Seppi	712	7											3	A de Minaur	6	2	3
		J Thompson	3	6	6											J Thompson	4	6	6
	Q	T Paul	6	1	4				J Thompson	6	6
		J Sousa	2	60				6	F Tiafoe	3	2
	6	F Tiafoe	6	77

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	D Goffin	6	6
	Q	A Davidovich Fokina	0	2				5	D Goffin	6	7
		M Ebden	4	5					P-H Herbert	3	5
		P-H Herbert	6	7											5	D Goffin	6	5	3
	WC	T de Bakker	2	1												A Mannarino	4	7	6
		A Mannarino	6	6					A Mannarino	1	6	6
								4	F Verdasco	6	3	4
																							A Mannarino	4	6	77
	7	C Garín	6	6																		2/WC	B Ćorić	6	3	64
	Q	S Caruso	1	4				7	C Garín	7	7
		R Haase	5	77	77				R Haase	5	5
		U Humbert	7	62	64										7	C Garín	77	3	66
	WC	J Rodionov	62	4											2/WC	B Ćorić	64	6	78
		T Fritz	77	6					T Fritz	6	3	3
								2/WC	B Ćorić	4	6	6

Qualifying

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Bradley Klahn	6	4	2
		Andrea Arnaboldi	4	6	6
									Andrea Arnaboldi	65	5
								6	Alejandro Davidovich Fokina	77	7
	WC	Nicolas Mahut	2	4
	6	Alejandro Davidovich Fokina	6	6

Second qualifier

	First round							Qualifying competition
	2	Thomas Fabbiano	4	6	6
	WC	Emil Ruusuvuori	6	3	1
								2	Thomas Fabbiano	4	2
								Alt	Jannik Sinner	6	6
	Alt	Jannik Sinner	66	77	6
	7	Lukáš Lacko	78	65	2

Third qualifier

	First round							Qualifying competition
	3	Jason Jung	2	7	2
		Marcos Giron	6	5	6
									Marcos Giron	3	6	3
								8	Salvatore Caruso	6	3	6
		Filip Horanský	3	2
	8	Salvatore Caruso	6	6

Fourth qualifier

	First round							Qualifying competition
	4	Alex Bolt	4	2
		Daniel Brands	6	6
									Daniel Brands	5	4
								5	Tommy Paul	7	6
		Egor Gerasimov	4	3
	5	Tommy Paul	6	6

References

• Main Draw
• Qualifying Draw