Juan Ignacio Chela in Bucharest semis

BUCHAREST, Romania -- Top-seeded Juan Ignacio Chela advanced to the semifinals of the Nastase Tiriac Trophy on Friday by beating seventh-seeded Andreas Seppi of Italy 7-5, 6-3.

Seppi led 5-3 in the first set after breaking Chela in the seventh game, but the Argentine broke back twice to take the lead.

Chela will face fourth-seeded Pablo Andujar of Spain, who defeated qualifier Alessandro Giannessi of Italy 6-3, 6-4. Chela beat Andujar in last year's Bucharest final.

Second-seeded Florian Mayer of Germany also reached the semifinals and will meet Filippo Volandri of Italy.

Mayer defeated Albert Ramos of Spain 6-1, 6-2, while Volandri beat Brazilian Joao Souza 6-2, 6-0.