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. 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. ''She started really well, and I managed to get back into the set and break her back,'' Ivanovic said. More...