Dinner on the line for Wozniacki, Radwanska

The cost of dinner will be on the line when good friends Caroline Wozniacki and Agnieszka Radwanska meet in the last four of the Indian Wells WTA tournament.

The pair, who first met in the junior ranks, regularly eat together on the circuit and they agree that whoever advances to the final will have to foot the bill for the next meal.

"If somebody wins something, it's buy the other one dinner," Radwanska told reporters after reaching her second semifinal of the year with a 6-4 6-3 victory over Russian Elena Dementieva.

"It's always like that," the fifth-seeded Pole added. "But if she wins, it doesn't make any changes with our relationship."

Second seed Wozniacki of Denmark, who battled past China's Zheng Jie 6-4 4-6 6-1 in the quarter-finals, agreed.

"The winner has to buy dinner, so I hope I'm gonna buy dinner," the 19-year-old said with a broad grin. "But she's a good friend. Tomorrow we're just going to relax, have fun and then we have to see what's gonna happen the day after."

Asked what they normally discussed at dinner on the WTA Tour, Wozniacki replied: "We don't talk about tennis.

"There are so many other things we want to talk about, so we prefer just to have a totally different conversation - clothes, fashion, make-up, nail polish, boys, everything."

The two friends have played each other only twice on the WTA circuit, Radwanska winning the first encounter 6-4 6-1 in Stockholm in 2007 and Wozniacki returning the favour by the same score at the same venue the following year.

"She's a good player," said world number four Wozniacki, whose father and coach Piotr was a professional soccer player in his native Poland.

"She's getting a lot of balls back. She's thinking. She's smart on the court. We're friends off the court, and we want to win and fight on the court.

"Once you start thinking: 'Okay, it's my friend, then what happens is you lose the match. So it's just important to stay focused and don't think about who's on the other side."

- Reuters