2021 Zagreb Open – Singles

Singles
2021 Zagreb Open
Champion	Sebastián Báez
Runner-up	Juan Pablo Varillas
Score	3–6, 6–3, 6–1

Main article: 2021 Zagreb Open

This was the first edition of the tournament since 2011.

Sebastián Báez won the title after defeating Juan Pablo Varillas 3–6, 6–3, 6–1 in the final.

Seeds

1. Federico Coria (second round)
2. Pedro Martínez (quarterfinals)
3. Andrej Martin (second round)
4. Yasutaka Uchiyama (first round)
5. Pedro Sousa (first round)
6. Benjamin Bonzi (first round)
7. Damir Džumhur (second round)
8. Thiago Seyboth Wild (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
		Juan Manuel Cerúndolo	1r
		Juan Pablo Varillas	5
									Juan Pablo Varillas	6	3	1
								Q	Sebastián Báez	3	6	6
	Q	Marcelo Tomás Barrios Vera	3	4
	Q	Sebastián Báez	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	F Coria	6	79
		M Safwat	4	67				1	F Coria	64	2
		JM Cerúndolo	6	6					JM Cerúndolo	77	6
		E Donskoy	3	2												JM Cerúndolo	6	63	6
		B van de Zandschulp	6	3	7											B van de Zandschulp	4	77	2
		M Mmoh	4	6	5				B van de Zandschulp	6	2	6
		A Tabilo	6	6					A Tabilo	1	6	4
	6	B Bonzi	4	1																			JM Cerúndolo	1r
	4	Y Uchiyama	3	2																			JP Varillas	5
		N Milojević	6	6					N Milojević	77	6
		L Mayer	6	64	6				L Mayer	64	2
		F Ferreira Silva	3	77	3											N Milojević	63	3
	WC	Antun Vidak	0	1												JP Varillas	77	6
		B Rola	6	6					B Rola	4	2
		JP Varillas	77	7					JP Varillas	6	6
	5	P Sousa	64	5

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	T Seyboth Wild	0	7	7
		R Safiullin	6	5	5			8	T Seyboth Wild	7	6
	Q	E Gulbis	65	65				WC	B Gojo	5	4
	WC	B Gojo	77	77											8	T Seyboth Wild	4	2
	Alt	D Popko	4	2											Q	MT Barrios Vera	6	6
	Q	MT Barrios Vera	6	6				Q	MT Barrios Vera	2	6	6
		J Jung	6	64	0r			3	A Martin	6	3	2
	3	A Martin	2	77	4																	Q	MT Barrios Vera	3	4
	7	D Džumhur	6	6																		Q	S Báez	6	6
		G Soeda	4	3				7	D Džumhur	77	1	5
	Q	S Báez	6	6				Q	S Báez	65	6	7
	Q	R Ramanathan	4	0											Q	S Báez	3	6	6
		K Żuk	4	6	6										2	P Martínez	6	3	4
		J Rodionov	6	3	3				K Żuk	66	2
	WC	N Serdarušić	4	77	3			2	P Martínez	78	6
	2	P Martínez	6	61	6

External links

• Main draw
• Qualifying draw