2021 Porto Open
Tennis tournament
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The 2021 Porto Open was a professional tennis tournament played on hardcourts. It was the first edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Porto, Portugal between 28 June and 4 July 2021.
| 2021 Porto Open | |
|---|---|
| Date | 28 June – 4 July |
| Edition | 1st |
| Surface | Hard |
| Location | Porto, Portugal |
| Champions | |
| Singles | |
 Altuğ Çelikbilek | |
| Doubles | |
 Guido Andreozzi / Guillermo Durán | |
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 BRA |
Thiago Seyboth Wild | 127 | 1 |
 IND |
Prajnesh Gunneswaran | 147 | 2 |
 ECU |
Emilio Gómez | 171 | 3 |
 CHI |
Alejandro Tabilo | 174 | 4 |
 POR |
Frederico Ferreira Silva | 176 | 5 |
 JPN |
Go Soeda | 177 | 6 |
 AUS |
Thanasi Kokkinakis | 182 | 7 |
 UZB |
Denis Istomin | 188 | 8 |
- 1 Rankings are as of 21 June 2021.[1]
Other entrants
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Luís Faria
Champions
Singles
Altuğ Çelikbilek def. 
Quentin Halys 6–2, 6–1.
Doubles
Guido Andreozzi / Guillermo Durán def. Renzo Olivo / 
Miguel Ángel Reyes-Varela 6–7(5–7), 7–6(7–5), [11–9].
