Top seeds through in Argentina
Top seed David Ferrer and second-seeded Fabio Fognini have both made it through to the Copa Claro's round of 32 in Buenos Aires.
Ferrer saw off qualifier Maximo Gonzalez 7-6 (9/7) 6-4, while Fognini was a 7-5 6-2 winner over Julian Reiser in Argentina.
There was something for the home fans to cheer too as Leandro Mayer emerged from his home clash with Facundo Arguello, winning 6-3 6-4.
Santiago Giraldo overcame Albert Montanes in straight sets, while the sixth-seeded Robin Haase was a three-set winner over Martin Alund.
Italy's Filippo Volandri got the better of Christian Garin after losing the first set, while Albert Ramos battled back to beat number seven Juan Monaco 6-7 (3/7) 6-4 6-2.