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Singles Champion Carlos Alcaraz Runner-up Richard Gasquet Final score 6–2, 6–2 Draw 28 Seeds 8
← 2019 ·
Croatia Open Umag
· →
2021 tennis event results
Dušan Lajović was the reigning champion from when the tournament was last held in 2019 , but lost to Daniel Altmaier in the quarterfinals.
Carlos Alcaraz won his maiden ATP Tour title, defeating Richard Gasquet in the final, 6–2, 6–2. With the victory, Alcaraz became the youngest player to win an ATP Tour title since Kei Nishikori at the 2008 Delray Beach International Tennis Championships .
Seeds [ ]
The top four seeds receive a bye into the second 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
Finals [ ]
Top half [ ]
Bottom half [ ]
Qualifying [ ]
Seeds [ ]
Daniel Altmaier (Qualified)
Nikola Milojević (Qualifying competition)
Blaž Rola (First round)
Alessandro Giannessi (Qualified)
Filip Horanský (Qualified)
Renzo Olivo (Qualifying competition, Lucky loser )
Thomas Fabbiano (First round)
Daniel Masur (First round)
Qualifiers [ ]
Lucky loser [ ]
Renzo Olivo
Qualifying draw [ ]
First qualifier [ ]
First Round
Qualifying Competition
1
Daniel Altmaier
2
6
6
Alt
Flavio Cobolli
6
3
1
1
Daniel Altmaier
3
6
6
WC
Matija Pecotić
6
4
3
WC
Matija Pecotić
7
6
7
Thomas Fabbiano
5
2
Second qualifier [ ]
Third qualifier [ ]
Fourth qualifier [ ]
First Round
Qualifying Competition
4
Alessandro Giannessi
6
7
Rudolf Molleker
3
5
4
Alessandro Giannessi
77
6
6
Renzo Olivo
65
1
Alt
Nerman Fatić
3
1
6
Renzo Olivo
6
6
References [ ]
Grand Slam events ATP Tour Masters 1000 ATP Tour 500 ATP Tour 250
Delray Beach (S , D )
Antalya (S , D )
Melbourne 1 (S , D )*
Melbourne 2 (S , D )*
Montpellier (S , D )
Córdoba (S , D )
Singapore (S , D )*
Buenos Aires (S , D )
Doha (S , D )
Marseille (S , D )
Santiago (S , D )
Marbella (S , D )*
Cagliari (S , D )*
Belgrade 1 (S , D )
Estoril (S , D )
Munich (S , D )
Geneva (S , D )
Lyon (S , D )
Belgrade 2 (S , D )*
Parma (S , D )*
Stuttgart (S , D )
Rosmalen
Eastbourne (S , D )
Mallorca (S , D )
Newport (S , D )
Båstad (S , D )
Los Cabos (S , D )
Umag (S , D )
Gstaad (S , D )
Kitzbühel (S , D )
Atlanta (S , D )
Winston-Salem (S , D )
Metz (S , D )
Nur-Sultan (S , D )*
San Diego (S , D )*
Sofia (S , D )
Moscow (S , D )
Antwerp (S , D )
St. Petersburg (S , D )
Stockholm (S , D )
Team events –
Tournaments are affected by the COVID-19 pandemic * –
Tournaments are introduced due to the impact of the COVID-19 pandemic