Chile midfielder Arturo Vidal will undergo knee surgery Wednesday, just five weeks before his country's first match at the World Cup.

Vidal visited specialist surgeon Ramon Cugat in Barcelona on Tuesday, accompanied by doctors from Chile's national team as well as those from his club Juventus.

Roger Federer withdrew from the Madrid Open on Tuesday to spend more time with his family ahead of the birth of his third child.

Federer said on his webpage on Tuesday he was pulling out of the tournament "to be with my wife Mirka during these next few exciting weeks for our family." The fourth-ranked Swiss player, who already has twins, said he would "rejoin the tour soon."

Pakistan will set up mandatory polio immunization points at its international airports in response to recommendations by the World Health Organisation, the health ministry said Tuesday.

The WHO warned Monday that the crippling disease has re-emerged as a public health emergency, with the virus currently affecting 10 countries worldwide and endemic in three including Pakistan.

Chris Paul made a career-high eight 3-pointers and scored 32 points to help the Los Angeles Clippers beat Oklahoma City 122-105 on Monday in Game 1 of their Western Conference semifinal.

In the Eastern Conference semifinals opener, Bradley Beal scored 14 of his 25 points in the fourth quarter and Trevor Ariza added 22 to lead the Washington Wizards past the top-seeded Indiana Pacers 102-96.

International creditors are back in Cyprus to measure the country's progress in implementing the terms of its 10 billion euro ($13.87 billion) rescue.

Officials from the European Union and the International Monetary Fund began talks with Cypriot authorities on Tuesday. Three earlier reviews found that the country's bailout program remained on track.

Liverpool regained the lead in the English Premier League but the crown slipped further from its grasp as it threw away a three-goal lead in a 3-3 draw away to Crystal Palace on Monday.

The stunning outcome put Liverpool a point above Manchester City, but City has a game in hand and can win its second title in three years with four points from its last two games.

Juventus gave its fans celebrating a third successive Serie A title another reason to revel in Turin by beating Atalanta 1-0 on Monday.

Juventus clinched its 30th league title the day before when second-place Roma lost 4-1 at Catania.

Oscar-winning U.S. actress Sally Field finally got a star on Hollywood's storied Walk of Fame on Monday, more than three decades after she earned her first Academy Award.

The 67-year-old joked about her roller-coaster career spanning five decades, including her Oscar-winning performances in 1979's "Norma Rae" and 1984's "Places in the Heart."

Second-ranked Li Na started her Madrid Open campaign by overcoming a stubborn opponent just as third-seeded Agnieszka Radwanska did to reach the second round on Monday.

Li's clay debut began with an encouraging 6-1, 7-6 (7) victory over Belgium's Kirsten Flipkens before Radwanska also advanced thanks to a 7-6 (3), 6-2 win over Canada's Eugenie Bouchard.

"The Snow Queen" (Farrar, Straus and Giroux), by Michael Cunningham

Like the Disney megahit "Frozen," Michael Cunningham's new novel is loosely based on the Hans Christian Andersen fairy tale "The Snow Queen."