Three members of the "Big Four" won second-round matches Wednesday at the 2015 Australian Open.

Second-seeded Andreas Seppi of Italy was ousted from the Winston-Salem Open Tuesday in three sets by U.S. qualifier Steve Johnson.

Belgian Steve Darcis, ranked 135th in the world, upset No. 5 Rafael Nadal at Wimbledon Monday while Roger Federer advanced easily.

Fifth-seeded Canadian star Milos Raonic took an early exit from the Gerry Weber Open Tuesday, falling in the first round to France's Gael Monfils.

Former world No. 1 Lleyton Hewitt was among the first-round winners Wednesday as the men's singles draw opened at the Sony Open in Miami.

Nadal breezes into Vina del Mar final ... Hahn, Snedeker share Pebble Beach lead ... Rocco Mediate's 61 earns Allianz lead ... Cilic reaches Zagreb Indoor finals again ... Sports news from United Press International.

Marin Cilic advanced to the finals of the Zagreb Indoor in his home country of Croatia Saturday with a three-set win over defending champion Mikhail Youzhny.

Third-seeded Roger Federer knocked off Italian Potito Starace Monday in the first round of the Swiss Indoors event in his home town of Basel.

John Isner blasted 20 aces in a three-set upset victory Thursday over top-seeded Tommy Robredo at the Heineken Open in New Zealand.

Third-seeded Austrian Jurgen Melzer was a first-round winner Monday at the U.S. Men's Clay Court Championships in Houston.

Fourth-seeded Russian Igor Andreev, second-seeded Croat Ivo Karlovic and eighth-seeded American Mardy Fish were second-round winners Tuesday at Pilot Pen.

World No. 1 Roger Federer, still trying for his first tournament win in 2008, advanced to the second round Tuesday at the Estoril Open in Portugal.

Britain's Andy Murray, Cyprus' Marcos Baghdatis and American Robby Ginepri were among Monday's first-round winners at the Madrid Masters tennis tournament.

Top-seeded U.S. Open finalist Novak Djokovic of Serbia beat American Robby Ginepri 6-3, 6-4 in Tuesday's opening-round at the BA-CA Tennis Trophy in Vienna.

Top-seeded Spaniard Tommy Robredo needed three sets Monday to defeat German Florian Mayer at the $500,000 Open de Moselle.