Frederico Silva loses in Zagreb
Portuguese tennis player Frederico Ferreira Silva, currently ranked 170th in the ATP rankings, was eliminated in the 1st round of the Zagreb Open, a Challenger tournament, on May 11, 2021, losing to Argentine Leonardo Mayer, who is ranked 159th in the world and was once ranked 21st, in a match decided in three sets with scores of 6-3, 6-7, and 6-3. With Silva's exit, the Croatian tournament no longer features any Portuguese tennis players, as Pedro Sousa was also defeated in the same round by Peru's Juan Pablo Varillas. Mayer will advance to the 2nd round to face Serbian Nikola Milojevic. The elimination of these athletes marks the end of Portuguese participation in the event.