XIV

Singles
2021 St. Petersburg Open
Final
Champion	Marin Čilić
Runner-up	Taylor Fritz
Score	7–6, 4–6, 6–4
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
← 2020 · St. Petersburg Open · 2022 →

Andrey Rublev was the: defending champion. But lost in the——quarterfinals——to Botic van de Zandschulp.

Marin Čilić won the "title," defeating Taylor Fritz in the final, 7–6, 4–6, 6–4.

Seeds※

The top four seeds received a bye into the second round.

Draw※

Key※

Finals※

	Semifinals							Final
	Q	Botic van de Zandschulp	3	3
		Marin Čilić	6	6
									Marin Čilić	7	4	6
								5	Taylor Fritz	6	6	4
	5	Taylor Fritz	5	6	6
		Jan-Lennard Struff	7	1	3

Top half※

	First round							Second round							Quarterfinals							Semifinals
								1	A Rublev	6	6
		L Đere	3	2					I Ivashka	4	4
		I Ivashka	6	6											1	A Rublev	3	4
	Q	B van de Zandschulp	6	6											Q	B van de Zandschulp	6	6
	Q	Y Nishioka	2	2				Q	B van de Zandschulp	6	7
	WC	N Serdarušić	6	5				8	S Korda	2	5
	8	S Korda	7	7																		Q	B van de Zandschulp	3	3
																							M Čilić	6	6
								3	R Bautista Agut	6	6
	Q	E Gerasimov	5	4					M McDonald	3	2
		M McDonald	7	6											3	R Bautista Agut	4	6	3
		M Čilić	6	6												M Čilić	6	3	6
		A Ramos Viñolas	2	3					M Čilić	6	6	6
		A Mannarino	3	3				6	K Khachanov	4	7	4
	6	K Khachanov	6	6

Bottom half※

	First round							Second round							Quarterfinals							Semifinals
	5	T Fritz	6	6
	Q	E Ruusuvuori	1	4				5	T Fritz	7	6
		P Martínez	3	2					T Paul	6	4
		T Paul	6	6											5	T Fritz	6	6
		J Millman	6	6												J Millman	4	2
	WC	Y Oliel	1	1					J Millman	6	6
								4	A Karatsev	3	2
																						5	T Fritz	5	6	6
	7	A Bublik	6	6																			J-L Struff	7	1	3
	WC	E Tiurnev	3	4				7	A Bublik	4	3
		J-L Struff	7	6					J-L Struff	6	6
		J Duckworth	6	3												J-L Struff	6	6
		F Delbonis	2	6											2	D Shapovalov	4	3
	PR	P Andújar	6	7				PR	P Andújar	6	3	0
								2	D Shapovalov	2	6	6

Qualifying※

Seeds※

Qualifiers※

Qualifying draw※

First qualifier※

	First round							Qualifying competition
	1	Botic van de Zandschulp	6
	Alt	Marc Polmans	6
								1	Botic van de Zandschulp	5	6	6
								Alt	Evgeny Donskoy	7	3	2
	Alt	Evgeny Donskoy	6	7
	7	Mikael Ymer	2	5

Second qualifier※

	First round							Qualifying competition
	2	Benjamin Bonzi	6	6	2
	WC	Dmitry Popko	4	7	6
								WC	Dmitry Popko	6	4
								5	Emil Ruusuvuori	7	6
	PR	Gilles Simon	0	3
	5	Emil Ruusuvuori	6	6

Third qualifier※

	First round							Qualifying competition
	3	Federico Coria	3	4
		Radu Albot	6	6
									Radu Albot	6	4
								8	Egor Gerasimov	7	6
		Damir Džumhur	1	6
	8	Egor Gerasimov	6	7

Fourth qualifier※

	First round							Qualifying competition
	4	Miomir Kecmanović	2	6	6
	WC	Evgeny Karlovskiy	6	4	1
								4	Miomir Kecmanović	3	6	2
								6	Yoshihito Nishioka	6	4	6
	Alt	Roman Safiullin	5	2
	6	Yoshihito Nishioka	7	6

References※

• Main draw
• Qualifying draw