Singles
2021 Bratislava Open
Champion	Tallon Griekspoor
Runner-up	Sebastián Báez
Score	7–6(8–6), 6–3

Norbert Gombos was the defending champion^[1] but lost in the second round to Filip Horanský.

Tallon Griekspoor won the title after defeating Sebastián Báez 7–6^(8–6), 6–3 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Filip Horanský	78	4	67
		Sebastián Báez	66	6	79
									Sebastián Báez	66	3
								5	Tallon Griekspoor	78	6
		Martin Kližan	4	7	4
	5	Tallon Griekspoor	6	5	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	N Gombos	6	6
		Y Maden	3	3				1	N Gombos	2	2
		M Marterer	2	4					F Horanský	6	6
		F Horanský	6	6												F Horanský	6	6
		E Benchetrit	5	2												C İlkel	3	4
		C İlkel	7	6					C İlkel	6	6
		F Mena	6	6					F Mena	3	4
	7	B Rola	4	2																			F Horanský	78	4	67
	4	J Kovalík	6	6																			S Báez	66	6	79
	Q	V Kopřiva	4	2				4	J Kovalík	77	1	4
		Q Halys	63	2					M Bachinger	61	6	6
		M Bachinger	77	6												M Bachinger	66	60
		S Báez	1	6	6											S Báez	78	77
		R Olivo	6	1	3				S Báez	6	5	6
		T Kamke	4	4				8	F Ferreira Silva	3	7	4
	8	F Ferreira Silva	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	JM Cerúndolo	6	6
	WC	Miloš Karol	4	2				6	JM Cerúndolo	77	3	5
		M Moraing	62	77	5				M Kližan	60	6	7
		M Kližan	77	63	7											M Kližan	77	6
	WC	A Molčan	78	6											PR	A Kuznetsov	64	2
	Q	D Ajduković	66	4				WC	A Molčan	4	4
	PR	A Kuznetsov	6	4	6			PR	A Kuznetsov	6	6
	3	H Dellien	2	6	3																		M Kližan	4	7	4
	5	T Griekspoor	77	77																		5	T Griekspoor	6	5	6
	Q	U Ignatik	61	62				5	T Griekspoor	6	3	6
	LL	L Miedler	2	4					S Diez	4	6	4
		S Diez	6	6											5	T Griekspoor	2	6	6
	WC	L Klein	6	3	64										Q	J Lehečka	6	3	2
	Q	J Lehečka	4	6	77			Q	J Lehečka	77	78
		Z Kolář	78	0	5			2	F Coria	65	66
	2	F Coria	66	6	7

References

External links

• Main draw
• Qualifying draw