Veteran photographer Pedro Mendes is covering this year's Portugal Open for TENNIS.com. Each day throughout the tournament, we'll publish a photo gallery of his exclusive on-site images. You can view them all here.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Portuguese veteran Frederico Gil went the distance in a two-hour and 50-minute decision.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Daniel Munoz De La Nava plays the two-hander from deep in the court.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Nastassja Burnett didn't miss much, permitting only two games in the first round.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Portuguese wild card Inês Murta was overwhelmed by Burnett.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Portugal's Vasco Mensurado steps into the forehand drive.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Jordi Samper-Montana maintains balance while creating skid marks.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Kiki Bertens on the attack against Claire Feuerstein.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Feuerstein was often forced to counter off her back foot in a 6-2, 6-2 defeat.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Russia's Valeria Solovyeva flicks a stretched reply.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

No. 2 seed Mona Barthel was sharp in a 6-1, 6-1 victory in her opener.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

Roberto Carballes Baena won 12 of the final 14 games to advance.

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Oeiras in Photos: April 26

Oeiras in Photos: April 26

João Domingues looks ready for launch.