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.

Singles main-draw entrants Seeds Country Player Rank1 SeedThiago Seyboth Wild1271Prajnesh Gunneswaran1472Emilio Gómez1713Alejandro Tabilo1744Frederico Ferreira Silva1765Go Soeda1776Thanasi Kokkinakis1827Denis Istomin1888 1 Rankings are as of 21 June 2021.

Other entrants The following players received wildcards into the singles main draw: Nuno Borges Gastão Elias Gonçalo Oliveira

The following players received entry into the singles main draw as alternates: Nicola Kuhn Peter Polansky Matteo Viola

The following players received entry from the qualifying draw: Geoffrey Blancaneaux Ulises Blanch Sem Verbeek Yosuke Watanuki

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].

References