2021 Saint Petersburg Challenger II – Singles

Singles
2021 Saint Petersburg Challenger II
Champion	Evgenii Tiurnev
Runner-up	Kacper Żuk
Score	6–4, 6–2

Main article: 2021 Saint Petersburg Challenger II

Zizou Bergs was the defending champion but lost in the second round to Kacper Żuk.

Evgenii Tiurnev won the title after defeating Żuk 6–4, 6–2 in the final.

Seeds

1. Roman Safiullin (first round)
2. Dmitry Popko (quarterfinals)
3. Cem İlkel (first round)
4. Marius Copil (semifinals)
5. Rudolf Molleker (second round)
6. Kacper Żuk (final)
7. Christopher Eubanks (quarterfinals)
8. Teymuraz Gabashvili (first 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
	WC	Evgenii Tiurnev	77	6
	4	Marius Copil	64	2
								WC	Evgenii Tiurnev	6	6
								6	Kacper Żuk	4	2
	6	Kacper Żuk	79	6
	Q	Jiří Lehečka	67	3

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Safiullin	4	67
	Q	M Bašić	6	79				Q	M Bašić	6	77
		R Ortega Olmedo	6	6					R Ortega Olmedo	1	63
		R Quiroz	3	3											Q	M Bašić	4	2
		V Kopřiva	4	2											WC	E Tiurnev	6	6
	WC	E Tiurnev	6	6				WC	E Tiurnev	6	2	6
		A Çelikbilek	6	6					A Çelikbilek	3	6	3
	8	T Gabashvili	2	2																		WC	E Tiurnev	77	6
	4	M Copil	6	6																		4	M Copil	64	2
	Alt	M Vrbenský	3	1				4	M Copil	5	6	6
		D-h Lee	6	1	1				A Vatutin	7	3	1
		A Vatutin	0	6	6										4	M Copil	77	7
		D Ajduković	7	6											7	C Eubanks	61	5
		Shuichi Sekiguchi	5	2					D Ajduković	3	3
	Alt	J de Jong	5	4				7	C Eubanks	6	6
	7	C Eubanks	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	K Żuk	6	6
		I Sijsling	4	3				6	K Żuk	1	6	6
	SE	Z Bergs	6	6				SE	Z Bergs	6	4	3
		P Krstin	2	1											6	K Żuk	6	6
		P Kotov	6	6												J Sock	3	2
	Q	T van Rijthoven	2	4					P Kotov	4	3
		J Sock	5	6	6				J Sock	6	6
	3	C İlkel	7	4	4																	6	K Żuk	79	6
	5	R Molleker	6	7																		Q	J Lehečka	67	3
		E Karlovskiy	3	5				5	R Molleker	2	3
	Q	J Lehečka	6	77				Q	J Lehečka	6	6
	Q	M Pecotić	2	64											Q	J Lehečka	6	6
	WC	D Yevseyev	6	6											2	D Popko	4	4
	WC	V Uzakov	0	0				WC	D Yevseyev	4	6	4
		N Serdarušić	4	4				2	D Popko	6	2	6
	2	D Popko	6	6

External links

• Main draw
• Qualifying draw