Date of Birth: 
Place of Birth: Arequipa, Peru
About Duilio Beretta
- Duilio Beretta Avalos (Spanish pronunciation: ['dwiljo ße'?eta a'ßalos]; born February 25, 1992) is a Peruvian professional tennis player. He recently won the finals stage of Boys' Doubles events on the French Open and US Open with Ecuadorian tennis player Roberto Quiroz.
- They defeated Argentinian pair Facundo Argüello and Agustín Velotti in France and won against Oliver Golding and Jirí Veselý in the United States.
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