En anglais (from BBC):
The uncertainty over the future of Martina Hingis will continue after she announced her withdrawal from next month's Pan Pacific Open in Tokyo.
Hingis, the defending champion, pulled out of the $1.3m (£850,000) tournament beginning on 28 January because she has not fully recovered from ankle surgery.
The 22-year-old Swiss had already announced that she would not be able to play at the first Grand Slam event of 2003, the Australian Open.
The former world number one had surgery back in May that kept her out of the French Open and Wimbledon.
She announced in October that she would take an indefinite break, citing January for a possible comeback.
However, in December, Hingis admitted that her left ankle required further rehabilitation.
Hingis has shared the Tokyo indoor title with Lindsay Davenport over the past six years, winning in 1997, 1999, 2000 and 2002.
Her withdrawal leaves Davenport and Australian Open champion Jennifer Capriati as the favourites for this year's crown.