Azarenka withdraws from Pan Pacific Open

TOKYO: World number one Victoria Azarenka crashed out of the Pan Pacific Open tennis tournament in contrasting styles on Thursday.

Azarenka, from Belarus, pulled out citing fatigue, while the French Open champion from Russia went down to Samantha Stosur of Australia 4-6, 6-7 (10/12) in the quarter-finals.

But defending champion and world number three Agnieszka Radwanska of Poland safely went through beating 2010 Tokyo champion Caroline Wozniacki of Denmark 6-4, 6-3.

"Before the tournament on Sunday, I started not feeling very good, just low energy," said Azarenka, 23, giving Angelique Kerber of Germany a free ticket to the semi-finals.

"It took too much energy in the last two matches and today it's not possible for me. Maybe it's because of the tiredness from the whole year. It was difficult to focus between points," added the top seed.