Singles
2019 Koblenz Open
Final
Champion	Gianluca Mager
Runner-up	Roberto Ortega Olmedo
Score	2–6, 7–6(8–6), 6–2
Events
Singles Doubles
← 2018 · Koblenz Open · 2020 →

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.

All seeds receive a bye into the second round.

	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

	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

	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

	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

	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

• Main draw
• Qualifying draw