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David Nalbandian has pulled out of the ATP Copa Telmex after picking up a leg injury during his second-round win on Wednesday, foreign media say.

The former world number three, playing in his first event since undergoing hip surgery in May, overcame Spain's Daniel Gimeno-Traver in three sets on Wednesday but injured his adductor in the process.

Tournament director Martin Jaite said: "David officially announces his withdrawal from the event. The match against [Albert] Montanes will not go ahead and the Spanish player will advance directly to the semi-finals."

On the Buenos Aires clay on Thursday, top seed David Ferrer lost only three games en route to a second-round victory over Frederico Gil.

The 27-year-old Spaniard breezed past his Portuguese opponent 6-3 6-0 to set up a quarter-final clash with sixth seed Igor Andreev.

Andreev was made to work harder for his last-eight berth, but eventually overcame Spaniard Marcel Granollers 3-6 6-3 6-4.

Fourth seed Juan Monaco also needed three sets to get past fellow Argentinian Juan Ignacio Chela 7-6 (7/3) 4-6 6-2.

Monaco will face another compatriot in the last eight after eighth seed Horacio Zeballos saw off Spanish wild card Carlos Moya 6-4 6-4.