Anna Chakvetadze of Russia became ill and had to retire from her first-round match at the Porsche Grand Prix on Tuesday, the third straight tournament she's had to quit because of dizzy spells.
Chakvetadze, a former top-10 player who had to qualify for the event, also retired from tournaments in Dubai and Indian Wells. Chakvetadze had a strong start before retiring at 6-1, 5-7, 4-4 against Zuzana Kucova of Slovakia.
''I started the match feeling fine but I knew it (the dizziness) was coming and started to feel worse in the second set, the same feeling as the last two times,'' Chakvetadze said in a statement distributed by the WTA. ''I have seen a doctor and don't really have anything more to update at the moment. I saw the doctors at home before the tournament and they told me everything would be OK, which is why I decided to play here.''
Kucova will play the top-ranked Caroline Wozniacki of Denmark, who had a bye into the second round.
Julia Goerges and Sabine Lisicki, members of Germany's Fed Cup team that beat the United states 5-0 over the weekend on the same indoor clay court, also advanced to the second round.
Goerges cruised past qualifier Michaella Krajicek of the Netherlands 6-3, 6-1 and Lisicki edged Dominika Cibulkova of Slovakia 7-5, 7-6 (2).
Fifth-seeded Sam Stosur of Australia defeated Maria Martinez Sanchez of Spain 7-5, 6-1.
Seventh-seeded Jelena Jankovic of Serbia breezed past Beatriz Garcia Vidagany of Spain 6-1, 6-2.
