DOHA, Qatar (AP) — Ninth-seeded Ana Ivanovic of Serbia advanced to the second round of the Qatar Open on Tuesday after Slovakia's Daniela Hantuchova retired from their match with a right knee injury.
Ivanovic was leading 7-5, 1-0 when Hantuchova withdrew after falling 0-40 behind in the second game.
The match started slowly for Ivanovic, who surrendered her first two serves as Hantuchova took a 5-3 lead. But Ivanovic won the next four games to secure the set, winning the ninth game at love with her final three serves being aces.
Wildcard entrant Alisa Kleybaova of Russia also advanced after her opponent retired.
At 5-5 in the first set, 10th-seeded Dominika Cibulkova of Slovak Republic, the recent Australian Open finalist, retired from the match with a gastrointestinal illness.