Bagnis, who is ranked 177th in the world, beat Sousa by 4-6, 6-3 and 7-5, in one hour and 54 minutes.

Sousa’s current world ranking of 41st is his best in more than a year.

However, this is the third consecutive tournament in which the Guimarães native has been knocked out in the first round, with the previous two being Wimbledon and the Croatia Open in Umag.