Juan Martin del Potro celebrated the start of his pre-French Open campaign with a 6-1, 6-0 hammering of Portugal's Rui Machado to reach the quarter-finals of the Estoril Open on Thursday.

Richard Gasquet powered past Paolo Lorenzi of Italy 6-1, 6-1 while third-seeded Stanislas Wawrinka recovered from a shaky start to beat Spanish qualifier Ivan Navarro 7-6 (5), 6-1 at the Estoril Open on Wednesday to reach the quarterfinals.

Former women's champions Maria Kirilenko and Anabel Medina Garrigues opened with contrasting May Day victories at the ATP-WTA Estoril Open on Tuesday.

Spain's Anabel Medina Garrigues defeated qualifier Melanie Oudin 6-4, 4-6, 6-0 on Monday as the main draw action got underway at the WTA Tour's Charleston tournament.

Polona Hercog of Slovenia reached her second straight WTA final by defeating top-seeded Flavia Pennetta of Italy 6-2, 6-2 at the Palermo Open on Saturday.

Top-seeded Flavia Pennetta defeated Tsvetana Pironkova of Bulgaria 6-2, 6-2 on Friday to reach her second semifinal of the season at the SNAI Open.

Fresh off her third title of the year, second-seeded Roberta Vinci beat Kazakh qualifier Sesil Karatantcheva 6-2, 7-5 on Tuesday in the first round of the Palermo Open.

Attempting to maintain her status as Italy's second-best player, top-seeded Flavia Pennetta beat wild card Anastassia Grymalska 6-4, 6-1 in the opening round of the Palermo Open on Monday.