Singles
2019 Koblenz Open
Champion	Gianluca Mager
Runner-up	Roberto Ortega Olmedo
Score	2–6, 7–6(8–6), 6–2

Mats Moraing was the defending champion but chose not to defend his title.

Gianluca Mager won the title after defeating Roberto Ortega Olmedo 2–6, 7–6^(8–6), 6–2 in the final.

Seeds

All seeds receive a bye into the second round.

Draw

Finals

	Quarterfinals							Semifinals							Final
	14	Tallon Griekspoor	6	7
		Kaichi Uchida	3	5
								14	Tallon Griekspoor	3	6	4
									Gianluca Mager	6	2	6
	3	Alexey Vatutin	5	2r
		Gianluca Mager	7	4
																Gianluca Mager	2	78	6
																Roberto Ortega Olmedo	6	66	2
		Carlos Taberner	7	5	1
		Pavel Kotov	5	7	6
									Pavel Kotov	5	6	3
									Roberto Ortega Olmedo	7	3	6
	7	Mikael Ymer	710	1	3
		Roberto Ortega Olmedo	68	6	6

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	C Ruud	6	4	6
	ITF	R Brancaccio	6	7				ITF	R Brancaccio	4	6	3
	Q	L Wessels	4	5											1	C Ruud	6	1	2
	PR	M Przysiężny	4	6	6										14	T Griekspoor	3	6	6
	ITF	J Barranco Cosano	6	3	2			PR	M Przysiężny	0	6	3
								14	T Griekspoor	6	2	6
																						14	T Griekspoor	6	7
																							K Uchida	3	5
								9	A Pavlásek	3	6	6
		TK Wang	6	6					TK Wang	6	3	4
		D Masur	4	2											9	A Pavlásek	2	6	63
		K Uchida	0	6	7											K Uchida	6	3	77
		B Zapata Miralles	6	2	5				K Uchida	77	6
								8	A De Greef	60	4

Section 2

	First round							Second round							Third round							Quarterfinals
								3	A Vatutin	3	79	6
		G Oliveira	6	6					G Oliveira	6	67	2
	LL	Bastien Presuhn	2	2											3	A Vatutin	6	66	78
	Q	P Torebko	6	1	6										16	U Ignatik	4	78	66
	WC	Kai Lemstra	1	6	1			Q	P Torebko	65	3
								16	U Ignatik	77	6
																						3	A Vatutin	5	2r
																							G Mager	7	4
								11	F Horanský	715	6
	WC	J Härteis	77	4	6			WC	J Härteis	613	4
		V Šafránek	63	6	3										11	F Horanský	64	3
		G Mager	6	6												G Mager	77	6
	ITF	Peter Heller	4	4					G Mager	2	6	6
								6	J Ward	6	4	4

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
								5	D Brands	62	5
		C Taberner	6	5	6				C Taberner	77	7
	WC	J Lenz	4	7	2											C Taberner	77	6
		E Karlovskiy	67	6	5										12	K de Schepper	65	2
		J Hernández-Fernández	79	4	7				J Hernández-Fernández	2	1
								12	K de Schepper	6	6
																							C Taberner	7	5	1
																							P Kotov	5	7	6
								15	T de Bakker	6	6
		N Serdarušić	4	2				WC	B Hassan	1	4
	WC	B Hassan	6	6											15	T de Bakker	2	63
		L Grigelis	66	3												P Kotov	6	77
		P Kotov	78	6					P Kotov	6	7
								4	A Arnaboldi	4	5

Section 4

	First round							Second round							Third round							Quarterfinals
								7	M Ymer	4	77	6
		Z Piros	4	6	6				Z Piros	6	60	2
		S Griekspoor	6	0	2										7	M Ymer	6	5	6
	ITF	R Safiullin	6	6											ITF	R Safiullin	2	7	4
		S Nagal	2	1				ITF	R Safiullin	6	64	6
								10	T Kamke	0	77	3
																						7	M Ymer	710	1	3
																							R Ortega Olmedo	68	6	6
								13	Z Kolář	2	4
	WC	M Gengel	61	3					R Ortega Olmedo	6	6
		R Ortega Olmedo	77	6												R Ortega Olmedo	6	3	6
	LL	R Bonadio	6	6											2	Y Maden	4	6	3
		R Marcora	4	2				LL	R Bonadio	2	2
								2	Y Maden	6	6

References

• Main draw
• Qualifying draw