Winning debuts for Lorenzo Sonego and Fabio Fognini at the ATP 500 tournament in Rio de Janeiro, Brazil.
The 26-year-old from Turin, number 21 in the world and sixth-seeded, beat the Serbian contemporary Laslo Djere (# 56) 6-2 6-0.
The 34-year-old Ligurian n.38 Atp instead regulated the 31-year-old Argentine Facundo Bagnis (n.77) for 6-2 6-4.
Tomorrow debut from the second round for Matteo Berrettini, number 6 in the world and first seed of the Brazilian draw: the 25-year-old from Rome will challenge the 27-year-old Brazilian Thiago Monteiro (# 106).