Singles
2023 Ostra Group Open
Champion	Zdeněk Kolář
Runner-up	Máté Valkusz
Score	6–3, 6–2

Evan Furness was the defending champion^[1] but retired from his first round match against Gaël Monfils.

Zdeněk Kolář won the title after defeating Máté Valkusz 6–3, 6–2 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	Alt	Shintaro Mochizuki	3	6	2
		Zdeněk Kolář	6	2	6
									Zdeněk Kolář	6	6
									Máté Valkusz	3	2
		Máté Valkusz	6	6
	6	Riccardo Bonadio	0	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Peniston	2	3
	WC	J Menšík	6	6				WC	J Menšík	6	2	64
	Q	G Andreozzi	6	4	1			Alt	S Mochizuki	1	6	77
	Alt	S Mochizuki	2	6	6										Alt	S Mochizuki	5	6	6
	WC	G Monfils	6	2											8	D Džumhur	7	2	3
		E Furness	3	0r				WC	G Monfils	3	4
	Q	H Squire	3	0				8	D Džumhur	6	6
	8	D Džumhur	6	6																		Alt	S Mochizuki	3	6	2
	3	V Kopřiva	7	4	6																		Z Kolář	6	2	6
		D Added	5	6	3			3	V Kopřiva	2	1
		M Zekić	69	2					Z Kolář	6	6
		Z Kolář	711	6												Z Kolář	6	2	6
		G Onclin	4	6	6											G Onclin	2	6	4
	Alt	V Sachko	6	4	2				G Onclin	6	6
	Q	R Molleker	0	6	1			9	D Svrčina	0	3
	9	D Svrčina	6	2	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	O Krutykh	6	6
		ND Ionel	1	2				7	O Krutykh	1	4
		Raphaël Collignon	4	4					F Ferreira Silva	6	6
		F Ferreira Silva	6	6												F Ferreira Silva	64	1
	Q	P Rikl	3	6	1											M Valkusz	77	6
		M Valkusz	6	4	6				M Valkusz	6	6
		Pol Martín Tiffon	4	3				4	G Blancaneaux	3	4
	4	G Blancaneaux	6	6																			M Valkusz	6	6
	6	R Bonadio	6	6																		6	R Bonadio	0	4
	Q	Àlex Martí Pujolràs	4	3				6	R Bonadio	6	77
	Q	K Sultanov	2	0					H Mayot	1	63
		H Mayot	6	6											6	R Bonadio	65	6	6
	WC	J Veselý	6	67	6										WC	J Veselý	77	3	4
		L Giustino	3	79	2			WC	J Veselý	2	6	6
		L Rosol	4	6	1			2	I Gakhov	6	3	4
	2	I Gakhov	6	3	6

References

External links

• Main draw
• Qualifying draw