"Welcome to the most extreme golf in the world," says the European Union ambassador to Afghanistan, as half-a-dozen heavily armed bodyguards fan out around him and scan the Kabul Golf Club course.

But Vygaudas Usackas is not talking about security threats facing golfers in a war zone -- he's talking about the course.

Veteran midfielder Paul Scholes signed a one-year contract extension with Manchester United on Monday, manager Sir Alex Ferguson revealed.

The 37-year-old came out of retirement in January and put in some excellent performances to earn himself another year at the only club he has played for and for whom he made his first-team debut in 1993.

Russell Westbrook scored a game-high 27 points and Kevin Durant had 25 points as Oklahoma City embarrassed the Los Angeles Lakers 119-90 in their NBA Western Conference second-round playoff series opener.

"We are a good team, especially at home," Westbrook said. "I just tried to come out aggressively and get some good legs under me."

Evan Turner scored the go-ahead layup and drained a couple of key free throws down the stretch as Philadelphia held on for a 82-81 win over Boston to even their Eastern Conference playoff series at 1-1.

Turner drove to the basket, got knocked down but still made the layup as he was falling under the basket to give the upstart Sixers a 76-75 lead 40 seconds left in the fourth.

Mark van Bommel signed a one-year contract Monday to return to PSV Eindhoven, saying he wants to help the club win its first title since 2008.

The 35-year-old midfielder is leaving AC Milan after 18 months to return to the club where he won four Dutch league titles in six years from 1999-2005.

In a matchup of former French Open champions, Ana Ivanovic beat Svetlana Kuznetsova 6-4, 6-3 in the wind Monday in the first round of the Italian Open.

"It was tough out there today but it was the same for both of us," said Ivanovic, who won her only major at Roland Garros in 2008. "I just tried to move and to adjust and really tried to look at the ball and move forward. It was difficult

Malaga's Dutch striker Ruud Van Nistelrooy retired from professional football on Monday, ending a stellar career that included stints with Manchester United and Real Madrid.

"Yesterday I played my last match as a professional," Van Nistelrooy, 35, told a news conference.

Alessandro del Piero scored in his last league appearance for Juventus as the newly crowned Serie A champion defeated Atalanta 3-1 on Sunday to become only the second Italian side to win the title by going the whole season unbeaten.

Del Piero signed off in style in front of the home fans as he doubled Juventus' lead in the 28th minute to cap a near 20-year career with the club.

Madrid capped its dominant Spanish league campaign with a 4-1 win over Mallorca on Sunday to give the champions a record 100 points this season, while Villarreal and Sporting Gijon joined already relegated Racing Santander in being demoted to the second division.

Cristiano Ronaldo opened the scoring at the Santiago Bernabeu in the ninth minute. Karim Benzema scored four minutes later, and Mesut Ozil struck a brace after halftime.

LeBron James, who earned his third league MVP award Saturday, finished with a game-high 32 points as star-studded Miami defeated Indiana 95-86 to take the opening game of their second round playoff series.

James, the game's best player, has won the MVP award three out of the last four years and is chasing his first ever NBA championship.