2021 Erste Bank Open – Singles

Andrey Rublev was the defending champion, but chose to compete in St. Petersburg instead.

Singles
2021 Erste Bank Open
Champion	Alexander Zverev
Runner-up	Frances Tiafoe
Score	7–5, 6–4
Draw	32 (4 Q / 3 WC )
Seeds	8

Main article: 2021 Erste Bank Open

Alexander Zverev won the title, defeating Frances Tiafoe in the final, 7–5, 6–4.

Seeds

1. Stefanos Tsitsipas (second round)
2. Alexander Zverev (champion)
3. Matteo Berrettini (quarterfinals)
4. Casper Ruud (quarterfinals)
5. Hubert Hurkacz (first round)
6. Félix Auger-Aliassime (quarterfinals)
7. Jannik Sinner (semifinals)
8. Diego Schwartzman (quarterfinals)

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
	Q	Frances Tiafoe	3	7	6
	7	Jannik Sinner	6	5	2
								Q	Frances Tiafoe	5	4
								2	Alexander Zverev	7	6
		Carlos Alcaraz	3	3
	2	Alexander Zverev	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	S Tsitsipas	78	6
		G Dimitrov	66	4				1	S Tsitsipas	6	3	4
		D Lajović	4	4				Q	F Tiafoe	3	6	6
	Q	F Tiafoe	6	6											Q	F Tiafoe	6	78
		G Monfils	77	6											8	D Schwartzman	4	66
	WC	L Musetti	62	4					G Monfils	65	6	2
		F Fognini	2	5				8	D Schwartzman	77	4	6
	8	D Schwartzman	6	7																		Q	F Tiafoe	3	7	6
	4	C Ruud	7	77																		7	J Sinner	6	5	2
		L Harris	5	62				4	C Ruud	7	4	6
		L Sonego	6	6					L Sonego	5	6	4
	LL	D Koepfer	4	3											4	C Ruud	5	1
	WC	D Novak	77	77											7	J Sinner	7	6
	Q	G Mager	64	64				WC	D Novak	4	2
		R Opelka	4	2				7	J Sinner	6	6
	7	J Sinner	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	H Hurkacz	4	78	3
	WC	A Murray	6	66	6			WC	A Murray	3	4
		C Alcaraz	6	6					C Alcaraz	6	6
		D Evans	4	3												C Alcaraz	6	62	77
		N Basilashvili	7	4	6										3	M Berrettini	1	77	65
		P Carreño Busta	5	6	3				N Basilashvili	77	2	3
	Q	A Popyrin	63	3				3	M Berrettini	65	6	6
	3	M Berrettini	77	6																			C Alcaraz	3	3
	6	F Auger-Aliassime	6	6																		2	A Zverev	6	6
	SE	R Berankis	3	2				6	F Auger-Aliassime	2	78	6
		C Norrie	77	6					C Norrie	6	66	4
		M Fucsovics	64	1											6	F Auger-Aliassime	4	6	3
		A de Minaur	6	77											2	A Zverev	6	3	6
	Q	K Anderson	3	63					A de Minaur	2	6	2
		F Krajinović	2	5				2	A Zverev	6	3	6
	2	A Zverev	6	7

Qualifying

Seeds

1. Frances Tiafoe (qualified)
2. Marcos Giron (first round)
3. Kevin Anderson (qualified)
4. Dominik Koepfer (qualifying competition, lucky loser)
5. Gianluca Mager (qualified)
6. Alexei Popyrin (qualified)
7. Roberto Carballés Baena (qualifying competition)
8. Peter Gojowczyk (first round)

Qualifiers

1. Frances Tiafoe
2. Alexei Popyrin
3. Kevin Anderson
4. Gianluca Mager

Lucky loser

1. Dominik Koepfer

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Frances Tiafoe	6	3	6
		Alex Molčan	4	6	1
								1	Frances Tiafoe	65	6	6
								WC	Lucas Miedler	77	4	3
	WC	Lucas Miedler	77	6
	8	Peter Gojowczyk	64	2

Second qualifier

	First round							Qualifying competition
	2	Marcos Giron	65	4
		Norbert Gombos	77	6
									Norbert Gombos	63	77	5
								6	Alexei Popyrin	77	60	7
		Feliciano López	5	68
	6	Alexei Popyrin	7	710

Third qualifier

	First round							Qualifying competition
	3	Kevin Anderson	6	6
	Alt	Jurij Rodionov	1	4
								3	Kevin Anderson	7	4	77
								7	Roberto Carballés Baena	5	6	65
	WC	Dominic Stricker	4	6	1
	7	Roberto Carballés Baena	6	3	6

Fourth qualifier

	First round							Qualifying competition
	4	Dominik Koepfer	78	6
	Alt	Alex Bolt	66	1
								4	Dominik Koepfer	3	6	3
								5	Gianluca Mager	6	3	6
	WC	Alexander Erler	77	2	4
	5	Gianluca Mager	62	6	6

External links

• Main draw
• Qualifying draw