Buenos Aires, Argentina (Sports Network) - Third-seeded Stanislas Wawrinka was an easy winner in his first-round match to highlight Tuesday's action at the clay-court Copa Claro tennis event.

Wawrinka needed a mere 58 minutes to dispose of Paolo Lorenzi in 6-3, 6-3 fashion at Buenos Aires Lawn Tennis Club. The Swiss veteran saved five break opportunities from Lorenzi for the match, while breaking his Italian foe twice in the second and final set.

One upset did occur on Day 2, with Albert Montanes upending seventh-seeded Pablo Andujar 5-7, 6-2, 6-4 in an all-Spanish affair.

Also on Tuesday, Russian Andrey Kuznetsov topped 2006 Buenos Aires runner-up Filippo Volandri of Italy 7-6 (7-5), 6-3; former top-five Spaniard Tommy Robredo leveled Portuguese qualifier Gastao Elias 6-3, 6-0; German qualifier Julian Reister bested Argentine Martin Alund 7-5, 6-1; Argentine Leonardo Mayer overcame Italian Simone Bolelli 5-7, 6-2, 6-3; and Spaniard Daniel Gimeno-Traver downed Serbian qualifier Dusan Lajovic 6-4, 7-5. Robredo titled here in 2009.

On Wednesday, top-seeded David Ferrer will open his week against Argentine wild card Agustin Velotti. Ferrer beat 2011 champion Nicolas Almagro in last year's all-Spanish Buenos Aires finale and was the runner-up here in 2010.

This week's champ will pocket $84,550.

The Sports Network