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Buenos Aires, Argentina (SportsNetwork.com) - Second seed Fabio Fognini and former champion Tommy Robredo were a pair of quarterfinal winners Friday at the Copa Claro tennis event, which is part of the ATP World Tour's 'Golden Swing' through Latin America.

The gritty Italian Fognini handled Spaniard Pablo Andujar 6-4, 6-3, while the third-seeded 2009 champion Robredo, of Spain, was leading sixth-seeded Robin Haase 6-1, 2-0 when the Dutchman retired on the red clay at Buenos Aires Lawn Tennis Club.

Fognini and Robredo will lock horns in one of Saturday's semifinals.