![Sport | 'I'm worried', admits Djokovic as French Open build-up suffers new setback](https://cdn.newsserve.net/en/knowledge/Novak-Djokovic_20190129.jpg)
Sport | 'I'm worried', admits Djokovic as French Open build-up suffers new setback
World number one Novak Djokovic admitted he was "worried" about his French Open title defence after falling to 44th-ranked Czech Tomas Machac in the Geneva semi-finals on Friday.
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