2021 Bratislava Open – Singles

Norbert Gombos was the defending champion but lost in the second round to Filip Horanský.

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

Main article: 2021 Bratislava Open

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

Seeds

1. Norbert Gombos (second round)
2. Federico Coria (second round)
3. Hugo Dellien (first round)
4. Jozef Kovalík (second round)
5. Tallon Griekspoor (champion)
6. Juan Manuel Cerúndolo (second round)
7. Blaž Rola (first round)
8. Frederico Ferreira Silva (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• SE = Special exempt
• PR = Protected ranking
• ITF = ITF entry
• JE = Junior exempt
• w/o = Walkover
• r = Retired
• d = Defaulted
• SR = Special ranking

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	M 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

External links

• Main draw
• Qualifying draw