2021 Open de Oeiras II


The 2021 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the second edition of the tournament, part of the 2021 ATP Challenger Tour. It took place in Oeiras, Portugal between 5 and 11 April 2021.

Singles main-draw entrants

Seeds

1 Rankings are as of 22 March 2021.

Other entrants

The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:

Champions

Singles

Pedro Cachin def. Nuno Borges 7–6, 7–6.

Doubles

Nuno Borges / Francisco Cabral def. Pavel Kotov / Tseng Chun-hsin 6–1, 6–2.