2021 Halle Open – Singles

{{Tennis events|2021|Halle Open|

| champ = {{flagicon|FRA}} Ugo Humbert

| runner = {{flagicon|RUS}} Andrey Rublev

| score = 6–3, 7–6^(7–4)

| draw = 32 (6{{abbr|Q|Qualifiers}} / 4{{abbr|WC|Wild cards}})

| seeds = 8

| type = singles doubles

| main_name = Halle Open

| before_year = 2019

}}

Ugo Humbert defeated Andrey Rublev in the final 6–3, 7–6^(7–4), to win the singles tennis title at the 2021 Halle Open. Humbert's win earned him his third career ATP Tour singles title and his first ATP 500 victory, and also made him the first French player to win the tournament since Henri Leconte won the inaugural edition in 1993.{{Cite web |date=20 June 2021 |title=Humbert Beats Rublev For Halle Title |url=https://www.atptour.com/en/news/humbert-halle-sunday-2021 |url-status=live |archive-url=https://web.archive.org/web/20211008100121/https://www.atptour.com/en/news/humbert-halle-sunday-2021 |archive-date=8 October 2021 |access-date=11 June 2022 |publisher=Association of Tennis Professionals }}{{Cite web |last=Berkok |first=John |date=20 June 2021 |title=Ugo Humbert upsets Andrey Rublev to win first ATP 500 title in Halle |url=https://www.tennis.com/news/articles/ugo-humbert-upsets-andrey-rublev-to-win-first-atp-500-title-in-halle |url-status=live |archive-url=https://web.archive.org/web/20211029235540/https://www.tennis.com/news/articles/ugo-humbert-upsets-andrey-rublev-to-win-first-atp-500-title-in-halle |archive-date=29 October 2021 |access-date=11 June 2022 |website=Tennis }} Both Humbert and Rublev were contesting their first career final on grass.{{Cite web |last=Fitzgerald |first=Matt |date=19 June 2021 |title=In Halle, Andrey Rublev reaches first grass-court final |url=https://www.tennis.com/news/articles/halle-andrey-rublev-makes-first-grass-final-basilashvili-humbert-auger-aliassime |url-status=live |archive-url=https://web.archive.org/web/20211103091459/https://www.tennis.com/news/articles/halle-andrey-rublev-makes-first-grass-final-basilashvili-humbert-auger-aliassime |archive-date=3 November 2021 |access-date=11 June 2022 |website=Tennis }}

Roger Federer was the defending champion from when the event was last held in 2019,{{cite web |date=23 June 2019 |title=Federer Win 10th Halle Title, Sends Wimbledon Warning |url=https://www.atptour.com/en/news/federer-goffin-halle-2019-final |url-status=live |archive-url=https://web.archive.org/web/20220422064907/https://www.atptour.com/en/news/federer-goffin-halle-2019-final |archive-date=22 April 2022 |access-date=11 June 2022 |website= |publisher=Association of Tennis Professionals }} but he lost in the second round to Félix Auger-Aliassime.{{Cite web |date=16 June 2021 |title=Felix Stuns 'Idol' Federer To Reach Halle QF |url=https://www.atptour.com/en/news/federer-auger-aliassime-halle-2021-tuesday |url-status=live |archive-url=https://web.archive.org/web/20220531041235/https://www.atptour.com/en/news/federer-auger-aliassime-halle-2021-tuesday |archive-date=31 May 2022 |access-date=11 June 2022 |publisher=Association of Tennis Professionals }}

==Seeds==

{{columns-list|colwidth=30em|

{{flagicon|RUS}} Daniil Medvedev (first round)
{{flagicon|GRE}} Stefanos Tsitsipas (withdrew)
{{flagicon|GER}} Alexander Zverev (second round)
{{flagicon|RUS}} Andrey Rublev (final)
{{flagicon|SUI}} Roger Federer (second round)
{{flagicon|ESP}} Roberto Bautista Agut (first round)
{{flagicon|BEL}} David Goffin (first round, retired)
{{flagicon|FRA}} Gaël Monfils (first round)

}}

Draw

=Finals=

{{4TeamBracket-Tennis3

| RD1=Semifinals

| RD2=Final

| team-width=175

| RD1-seed1=

| RD1-team1={{flagicon|CAN}} Félix Auger-Aliassime

| RD1-score1-1=4

| RD1-score1-2=6

| RD1-score1-3=6⁵

| RD1-seed2=

| RD1-team2={{flagicon|FRA}} Ugo Humbert

| RD1-score2-1=6

| RD1-score2-2=3

| RD1-score2-3=7⁷

| RD1-seed3=4

| RD1-team3={{flagicon|RUS}} Andrey Rublev

| RD1-score3-1=6

| RD1-score3-2=3

| RD1-score3-3=6

| RD1-seed4=Q

| RD1-team4={{flagicon|GEO}} Nikoloz Basilashvili

| RD1-score4-1=1

| RD1-score4-2=6

| RD1-score4-3=3

| RD2-seed1=

| RD2-team1={{flagicon|FRA}} Ugo Humbert

| RD2-score1-1=6

| RD2-score1-2=7⁷

| RD2-score1-3=

| RD2-seed2=4

| RD2-team2={{flagicon|RUS}} Andrey Rublev

| RD2-score2-1=3

| RD2-score2-2=6⁴

| RD2-score2-3=

}}

=Top half=

{{16TeamBracket-Compact-Tennis3

| RD1=First round

| RD2=Second round

| RD3=Quarterfinals

| RD4=Semifinals

| RD1-seed01=1

| RD1-team01={{flagicon|RUS}} D Medvedev

| RD1-score01-1=6⁶

| RD1-score01-2=3

| RD1-score01-3=

| RD1-seed02=

| RD1-team02={{flagicon|GER}} J-L Struff

| RD1-score02-1=7⁸

| RD1-score02-2=6

| RD1-score02-3=

| RD1-seed03=

| RD1-team03={{flagicon|CAN}} V Pospisil

| RD1-score03-1=6⁴

| RD1-score03-2=6⁶

| RD1-score03-3=

| RD1-seed04=Q

| RD1-team04={{flagicon|USA}} M Giron

| RD1-score04-1=7⁷

| RD1-score04-2=7⁸

| RD1-score04-3=

| RD1-seed05=

| RD1-team05={{flagicon|CAN}} F Auger-Aliassime

| RD1-score05-1=6

| RD1-score05-2=7

| RD1-score05-3=

| RD1-seed06=

| RD1-team06={{flagicon|POL}} H Hurkacz

| RD1-score06-1=3

| RD1-score06-2=5

| RD1-score06-3=

| RD1-seed07=Q

| RD1-team07={{flagicon|BLR}} I Ivashka

| RD1-score07-1=6⁴

| RD1-score07-2=5

| RD1-score07-3=

| RD1-seed08=5

| RD1-team08={{flagicon|SUI}} R Federer

| RD1-score08-1=7⁷

| RD1-score08-2=7

| RD1-score08-3=

| RD1-seed09=3

| RD1-team09={{flagicon|GER}} A Zverev

| RD1-score09-1=6

| RD1-score09-2=3

| RD1-score09-3=6

| RD1-seed10=

| RD1-team10={{flagicon|GER}} D Koepfer

| RD1-score10-1=4

| RD1-score10-2=6

| RD1-score10-3=3

| RD1-seed11=

| RD1-team11={{flagicon|FRA}} U Humbert

| RD1-score11-1=4

| RD1-score11-2=7⁷

| RD1-score11-3=7⁷

| RD1-seed12=

| RD1-team12={{flagicon|USA}} S Querrey

| RD1-score12-1=6

| RD1-score12-2=6⁴

| RD1-score12-3=6⁵

| RD1-seed13=Q

| RD1-team13={{flagicon|LTU}} R Berankis

| RD1-score13-1=3

| RD1-score13-2=6

| RD1-score13-3=2

| RD1-seed14=

| RD1-team14={{flagicon|JPN}} K Nishikori

| RD1-score14-1=6

| RD1-score14-2=2

| RD1-score14-3=6

| RD1-seed15=

| RD1-team15={{flagicon|USA}} S Korda

| RD1-score15-1=6

| RD1-score15-2=7⁷

| RD1-score15-3=

| RD1-seed16=6

| RD1-team16={{flagicon|ESP}} R Bautista Agut

| RD1-score16-1=3

| RD1-score16-2=6⁰

| RD1-score16-3=

| RD2-seed01=

| RD2-team01={{flagicon|GER}} J-L Struff

| RD2-score01-1=7⁷

| RD2-score01-2=3

| RD2-score01-3=4

| RD2-seed02=Q

| RD2-team02={{flagicon|USA}} M Giron

| RD2-score02-1=6¹

| RD2-score02-2=6

| RD2-score02-3=6

| RD2-seed03=

| RD2-team03={{flagicon|CAN}} F Auger-Aliassime

| RD2-score03-1=4

| RD2-score03-2=6

| RD2-score03-3=6

| RD2-seed04=5

| RD2-team04={{flagicon|SUI}} R Federer

| RD2-score04-1=6

| RD2-score04-2=3

| RD2-score04-3=2

| RD2-seed05=3

| RD2-team05={{flagicon|GER}} A Zverev

| RD2-score05-1=6⁴

| RD2-score05-2=6

| RD2-score05-3=3

| RD2-seed06=

| RD2-team06={{flagicon|FRA}} U Humbert

| RD2-score06-1=7⁷

| RD2-score06-2=3

| RD2-score06-3=6

| RD2-seed07=

| RD2-team07={{flagicon|JPN}} K Nishikori

| RD2-score07-1=6

| RD2-score07-2=3

| RD2-score07-3=5

| RD2-seed08=

| RD2-team08={{flagicon|USA}} S Korda

| RD2-score08-1=2

| RD2-score08-2=6

| RD2-score08-3=7

| RD3-seed01=Q

| RD3-team01={{flagicon|USA}} M Giron

| RD3-score01-1=3

| RD3-score01-2=2

| RD3-score01-3=

| RD3-seed02=

| RD3-team02={{flagicon|CAN}} F Auger-Aliassime

| RD3-score02-1=6

| RD3-score02-2=6

| RD3-score02-3=

| RD3-seed03=

| RD3-team03={{flagicon|FRA}} U Humbert

| RD3-score03-1=6

| RD3-score03-2=6⁵

| RD3-score03-3=6

| RD3-seed04=

| RD3-team04={{flagicon|USA}} S Korda

| RD3-score04-1=2

| RD3-score04-2=7⁷

| RD3-score04-3=4

| RD4-seed01=

| RD4-team01={{flagicon|CAN}} F Auger-Aliassime

| RD4-score01-1=4

| RD4-score01-2=6

| RD4-score01-3=6⁵

| RD4-seed02=

| RD4-team02={{flagicon|FRA}} U Humbert

| RD4-score02-1=6

| RD4-score02-2=3

| RD4-score02-3=7⁷

}}

=Bottom half=

{{16TeamBracket-Compact-Tennis3

| RD1=First round

| RD2=Second round

| RD3=Quarterfinals

| RD4=Semifinals

| RD1-seed01=7

| RD1-team01={{flagicon|BEL}} D Goffin

| RD1-score01-1=6

| RD1-score01-2=5

| RD1-score01-3=0^r

| RD1-seed02=

| RD1-team02={{flagicon|FRA}} C Moutet

| RD1-score02-1=1

| RD1-score02-2=7

| RD1-score02-3=0

| RD1-seed03=SE

| RD1-team03={{flagicon|AUT}} J Rodionov

| RD1-score03-1=4

| RD1-score03-2=3

| RD1-score03-3=

| RD1-seed04=WC

| RD1-team04={{flagicon|GER}} P Kohlschreiber

| RD1-score04-1=6

| RD1-score04-2=6

| RD1-score04-3=

| RD1-seed05=

| RD1-team05={{flagicon|AUS}} J Thompson

| RD1-score05-1=6

| RD1-score05-2=7⁷

| RD1-score05-3=

| RD1-seed06=WC

| RD1-team06={{flagicon|GER}} D Altmaier

| RD1-score06-1=2

| RD1-score06-2=6⁴

| RD1-score06-3=

| RD1-seed07=

| RD1-team07={{flagicon|RUS}} K Khachanov

| RD1-score07-1=3

| RD1-score07-2=6⁵

| RD1-score07-3=

| RD1-seed08=4

| RD1-team08={{flagicon|RUS}} A Rublev

| RD1-score08-1=6

| RD1-score08-2=7⁷

| RD1-score08-3=

| RD1-seed09={{small|8/WC}}

| RD1-team09={{flagicon|FRA}} G Monfils

| RD1-score09-1=4

| RD1-score09-2=4

| RD1-score09-3=

| RD1-seed10=

| RD1-team10={{flagicon|RSA}} L Harris

| RD1-score10-1=6

| RD1-score10-2=6

| RD1-score10-3=

| RD1-seed11=

| RD1-team11={{flagicon|ARG}} G Pella

| RD1-score11-1=7⁷

| RD1-score11-2=5

| RD1-score11-3=1

| RD1-seed12=Q

| RD1-team12={{flagicon|SVK}} L Lacko

| RD1-score12-1=6⁵

| RD1-score12-2=7

| RD1-score12-3=6

| RD1-seed13=Q

| RD1-team13={{flagicon|GEO}} N Basilashvili

| RD1-score13-1=6

| RD1-score13-2=3

| RD1-score13-3=6

| RD1-seed14=

| RD1-team14={{flagicon|FRA}} G Simon

| RD1-score14-1=1

| RD1-score14-2=6

| RD1-score14-3=4

| RD1-seed15=Q

| RD1-team15={{flagicon|FRA}} A Rinderknech

| RD1-score15-1=7

| RD1-score15-2=6

| RD1-score15-3=

| RD1-seed16=LL

| RD1-team16={{flagicon|GER}} Y Hanfmann

| RD1-score16-1=5

| RD1-score16-2=3

| RD1-score16-3=

| RD2-seed01=

| RD2-team01={{flagicon|FRA}} C Moutet

| RD2-score01-1=4

| RD2-score01-2=6⁴

| RD2-score01-3=

| RD2-seed02=WC

| RD2-team02={{flagicon|GER}} P Kohlschreiber

| RD2-score02-1=6

| RD2-score02-2=7⁷

| RD2-score02-3=

| RD2-seed03=

| RD2-team03={{flagicon|AUS}} J Thompson

| RD2-score03-1=4

| RD2-score03-2=4

| RD2-score03-3=

| RD2-seed04=4

| RD2-team04={{flagicon|RUS}} A Rublev

| RD2-score04-1=6

| RD2-score04-2=6

| RD2-score04-3=

| RD2-seed05=

| RD2-team05={{flagicon|RSA}} L Harris

| RD2-score05-1=6

| RD2-score05-2=7¹⁰

| RD2-score05-3=

| RD2-seed06=Q

| RD2-team06={{flagicon|SVK}} L Lacko

| RD2-score06-1=3

| RD2-score06-2=6⁸

| RD2-score06-3=

| RD2-seed07=Q

| RD2-team07={{flagicon|GEO}} N Basilashvili

| RD2-score07-1=6

| RD2-score07-2=7

| RD2-score07-3=

| RD2-seed08=Q

| RD2-team08={{flagicon|FRA}} A Rinderknech

| RD2-score08-1=2

| RD2-score08-2=5

| RD2-score08-3=

| RD3-seed01=WC

| RD3-team01={{flagicon|GER}} P Kohlschreiber

| RD3-score01-1=6⁴

| RD3-score01-2=2

| RD3-score01-3=

| RD3-seed02=4

| RD3-team02={{flagicon|RUS}} A Rublev

| RD3-score02-1=7⁷

| RD3-score02-2=6

| RD3-score02-3=

| RD3-seed03=

| RD3-team03={{flagicon|RSA}} L Harris

| RD3-score03-1=4

| RD3-score03-2=6⁵

| RD3-score03-3=

| RD3-seed04=Q

| RD3-team04={{flagicon|GEO}} N Basilashvili

| RD3-score04-1=6

| RD3-score04-2=7⁷

| RD3-score04-3=

| RD4-seed01=4

| RD4-team01={{flagicon|RUS}} A Rublev

| RD4-score01-1=6

| RD4-score01-2=3

| RD4-score01-3=6

| RD4-seed02=Q

| RD4-team02={{flagicon|GEO}} N Basilashvili

| RD4-score02-1=1

| RD4-score02-2=6

| RD4-score02-3=3

}}

Qualifying

=Seeds=

{{columns-list|colwidth=30em|

{{flagicon|GEO}} Nikoloz Basilashvili (qualified)
{{flagicon|BLR}} Egor Gerasimov (first round)
{{flagicon|USA}} Marcos Giron (qualified)
{{flagicon|MDA}} Radu Albot (first round)
{{flagicon|BLR}} Ilya Ivashka (qualified)
{{flagicon|LTU}} Ričardas Berankis (qualified)
{{flagicon|GER}} Yannick Hanfmann (qualifying competition, lucky loser)
{{flagicon|AUS}} James Duckworth (qualifying competition)
{{flagicon|COL}} Daniel Elahi Galán (qualifying competition)
{{flagicon|AUT}} Dennis Novak (qualifying competition)
{{flagicon|POR}} João Sousa (qualifying competition)
{{flagicon|FRA}} Arthur Rinderknech (qualified)

}}

=Qualifiers=

{{columns-list|colwidth=30em|

{{flagicon|GEO}} Nikoloz Basilashvili
{{flagicon|SVK}} Lukáš Lacko
{{flagicon|USA}} Marcos Giron
{{flagicon|FRA}} Arthur Rinderknech
{{flagicon|BLR}} Ilya Ivashka
{{flagicon|LTU}} Ričardas Berankis

}}

=Lucky loser=

{{flagicon|GER}} Yannick Hanfmann

=Qualifying draw=

==First qualifier==

{{4TeamBracket-Tennis3-v2

| RD1=First round

| RD2=Qualifying competition

|team-width=175

| RD1-seed1=1

| RD1-team1={{flagicon|GEO}} Nikoloz Basilashvili

| RD1-score1-1=7⁹

| RD1-score1-2=7⁷

| RD1-score1-3=

| RD1-seed2=WC

| RD1-team2={{flagicon|GER}} Rudolf Molleker

| RD1-score2-1=6⁷

| RD1-score2-2=6⁵

| RD1-score2-3=

| RD1-seed3=

| RD1-team3={{flagicon|FRA}} Alexandre Müller

| RD1-score3-1=6

| RD1-score3-2=0

| RD1-score3-3=5

| RD1-seed4=7

| RD1-team4={{flagicon|GER}} Yannick Hanfmann

| RD1-score4-1=2

| RD1-score4-2=6

| RD1-score4-3=7

| RD2-seed1=1

| RD2-team1={{flagicon|GEO}} Nikoloz Basilashvili

| RD2-score1-1=7⁷

| RD2-score1-2=6

| RD2-score1-3=

| RD2-seed2=7

| RD2-team2={{flagicon|GER}} Yannick Hanfmann

| RD2-score2-1=6³

| RD2-score2-2=4

| RD2-score2-3=

}}

==Second qualifier==

{{4TeamBracket-Tennis3-v2

| RD1=First round

| RD2=Qualifying competition

|team-width=175

| RD1-seed1=2

| RD1-team1={{flagicon|BLR}} Egor Gerasimov

| RD1-score1-1=4

| RD1-score1-2=5

| RD1-score1-3=

| RD1-seed2=PR

| RD1-team2={{flagicon|SVK}} Lukáš Lacko

| RD1-score2-1=6

| RD1-score2-2=7

| RD1-score2-3=

| RD1-seed3=

| RD1-team3={{flagicon|FRA}} Grégoire Barrère

| RD1-score3-1=6

| RD1-score3-2=6⁵

| RD1-score3-3=4

| RD1-seed4=11

| RD1-team4={{flagicon|POR}} João Sousa

| RD1-score4-1=3

| RD1-score4-2=7⁷

| RD1-score4-3=6

| RD2-seed1=PR

| RD2-team1={{flagicon|SVK}} Lukáš Lacko

| RD2-score1-1=4

| RD2-score1-2=6

| RD2-score1-3=6

| RD2-seed2=11

| RD2-team2={{flagicon|POR}} João Sousa

| RD2-score2-1=6

| RD2-score2-2=4

| RD2-score2-3=3

}}

==Third qualifier==

{{4TeamBracket-Tennis3-v2

| RD1=First round

| RD2=Qualifying competition

|team-width=175

| RD1-seed1=3

| RD1-team1={{flagicon|USA}} Marcos Giron

| RD1-score1-1=6

| RD1-score1-2=7

| RD1-score1-3=

| RD1-seed2=WC

| RD1-team2={{flagicon|SUI}} Dominic Stricker

| RD1-score2-1=4

| RD1-score2-2=5

| RD1-score2-3=

| RD1-seed3=WC

| RD1-team3={{flagicon|ESP}} Nicola Kuhn

| RD1-score3-1=6²

| RD1-score3-2=6

| RD1-score3-3=6⁴

| RD1-seed4=9

| RD1-team4={{flagicon|COL}} Daniel Elahi Galán

| RD1-score4-1=7⁷

| RD1-score4-2=4

| RD1-score4-3=7⁷

| RD2-seed1=3

| RD2-team1={{flagicon|USA}} Marcos Giron

| RD2-score1-1=6

| RD2-score1-2=7⁷

| RD2-score1-3=

| RD2-seed2=9

| RD2-team2={{flagicon|COL}} Daniel Elahi Galán

| RD2-score2-1=4

| RD2-score2-2=6⁵

| RD2-score2-3=

}}

==Fourth qualifier==

{{4TeamBracket-Tennis3-v2

| RD1=First round

| RD2=Qualifying competition

|team-width=175

| RD1-seed1=4

| RD1-team1={{flagicon|MDA}} Radu Albot

| RD1-score1-1=6

| RD1-score1-2=3

| RD1-score1-3=5

| RD1-seed2=

| RD1-team2={{flagicon|AUS}} Christopher O'Connell

| RD1-score2-1=4

| RD1-score2-2=6

| RD1-score2-3=7

| RD1-seed3=

| RD1-team3={{flagicon|UKR}} Sergiy Stakhovsky

| RD1-score3-1=4

| RD1-score3-2=4

| RD1-score3-3=

| RD1-seed4=12

| RD1-team4={{flagicon|FRA}} Arthur Rinderknech

| RD1-score4-1=6

| RD1-score4-2=6

| RD1-score4-3=

| RD2-seed1=

| RD2-team1={{flagicon|AUS}} Christopher O'Connell

| RD2-score1-1=6

| RD2-score1-2=4

| RD2-score1-3=2

| RD2-seed2=12

| RD2-team2={{flagicon|FRA}} Arthur Rinderknech

| RD2-score2-1=3

| RD2-score2-2=6

| RD2-score2-3=6

}}

==Fifth qualifier==

{{4TeamBracket-Tennis3-v2

| RD1=First round

| RD2=Qualifying competition

|team-width=175

| RD1-seed1=5

| RD1-team1={{flagicon|BLR}} Ilya Ivashka

| RD1-score1-1=6

| RD1-score1-2=6

| RD1-score1-3=

| RD1-seed2=PR

| RD1-team2={{flagicon|JPN}} Tatsuma Ito

| RD1-score2-1=1

| RD1-score2-2=3

| RD1-score2-3=

| RD1-seed3=

| RD1-team3={{flagicon|LAT}} Ernests Gulbis

| RD1-score3-1=7

| RD1-score3-2=5

| RD1-score3-3=2

| RD1-seed4=8

| RD1-team4={{flagicon|AUS}} James Duckworth

| RD1-score4-1=5

| RD1-score4-2=7

| RD1-score4-3=6

| RD2-seed1=5

| RD2-team1={{flagicon|BLR}} Ilya Ivashka

| RD2-score1-1=2

| RD2-score1-2=6

| RD2-score1-3=6

| RD2-seed2=8

| RD2-team2={{flagicon|AUS}} James Duckworth

| RD2-score2-1=6

| RD2-score2-2=4

| RD2-score2-3=0

}}

==Sixth qualifier==

{{4TeamBracket-Tennis3-v2

| RD1=First round

| RD2=Qualifying competition

|team-width=175

| RD1-seed1={{small|6/Alt}}

| RD1-team1={{flagicon|LTU}} Ričardas Berankis

| RD1-score1-1=6

| RD1-score1-2=2

| RD1-score1-3=

| RD1-seed2=

| RD1-team2={{flagicon|GER}} Cedrik-Marcel Stebe

| RD1-score2-1=4

| RD1-score2-2=1^r

| RD1-score2-3=

| RD1-seed3=

| RD1-team3={{flagicon|GER}} Yannick Maden

| RD1-score3-1=4

| RD1-score3-2=0^r

| RD1-score3-3=

| RD1-seed4=10

| RD1-team4={{flagicon|AUT}} Dennis Novak

| RD1-score4-1=6

| RD1-score4-2=0

| RD1-score4-3=

| RD2-seed1={{small|6/Alt}}

| RD2-team1={{flagicon|LTU}} Ričardas Berankis

| RD2-score1-1=6

| RD2-score1-2=6

| RD2-score1-3=

| RD2-seed2=10

| RD2-team2={{flagicon|AUT}} Dennis Novak

| RD2-score2-1=4

| RD2-score2-2=3

| RD2-score2-3=

}}

References

External links

[http://www.protennislive.com/posting/2021/500/mds.pdf Main draw]
[http://www.protennislive.com/posting/2021/500/qs.pdf Qualifying draw]

Singles