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STUTTGART, Germany (AP) _ French Open quarterfinalist Guillermo Canas reached the final four of the $500,000 clay-court Mercedes Open by outlasting Alberto Martin 1-6, 6-2, 7-6 (5).

Canas next faces top-seeded Jiri Novak, who beat Tommy Robredo 6-4, 6-2 to reach the semifinals.

On the other half of the draw, Mikhail Youzhny knocked off fourth-seeded Younes El Aynaoui 6-3, 6-2, while Lars Burgsmuller defeated fifth-seeded Andrei Pavel 3-6, 6-3, 6-2.

The 77th-ranked Burgsmuller upset defending champion Gustavo Kuerten in the quarterfinals. Burgsmuller, who won his first title at Copenhagen this year, used two early service breaks in the final set to get past Pavel.