World No. 1 superstar Roger Federer, Australian Open champion Novak Djokovic and former top-ranked American Andy Roddick led the charge into the quarterfinals at the $3.5 million Italian Masters, a clay-court French Open tune-up.

Surging American Serena Williams posted a third-round win, while top-ranked star Justine Henin went by way of the upset Thursday at the $1.34 million German Open, a clay-court French Open tuneup. Also, second-seeded and defending champion Ana Ivanovic snuck into the quarterfinals here on Day 4.

With the 2008 French Open set to get underway in less than three weeks, the clay-court master that is Rafael Nadal is still in the process of tuning up to claim a fourth straight title at the Parisian Slam.

For only the second time in his last 105 matches on clay, Rafael Nadal came up a loser Wednesday at the $3.5 million Italian Masters, a French Open tune-up.

Three-time champion Justine Henin, reigning titlist Ana Ivanovic and 2007 runner-up Svetlana Kuznetsova were among Wednesday's second-round winners at the $1.34 million German Open, a clay-court French Open tune-up.

Red-hot American Serena Williams was an easy second-round winner Tuesday at the $1.34 million German Open, a clay- court French Open tune-up.

Current world No. 1 Roger Federer and former top-ranked star Andy Roddick were a pair of second-round winners Tuesday at the $3.5 million Italian Masters, a clay-court French Open tune-up.

Ninth-seeded Frenchman Richard Gasquet and former world No. 1 Russian Marat Safin went by the way of first-round upsets Monday at the $3.5 million Italian Masters, a clay-court French Open tune-up.

Several seeds, including Hungarian Agnes Szavay and Russian Nadia Petrova, won first-round matches Monday at the $1.34 million German Open, a clay-court French Open tune-up.

Gisela Dulko edged top-seeded Anabel Medina Garrigues of Spain to win the $145,000 Moroccan Grand Prix tennis event on Sunday.