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List of ATP number 1 ranked singles tennis players - Wikipedia
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Novak Djokovic Breaks Roger Federers World Record For Most Weeks at No.1 in ATP Rankings | Tennis News | India.com sports news
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Novak Djokovic eclipses Federer's all-time ATP record for most weeks at No 1 - Tennis Majors
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ATP Tour - Incredible records 😅 | Facebook
Tennis news: Novak Djokovic breaks Federer's record for most weeks as ATP No. 1
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ATP Tour records: Most titles in tennis career (men's) | SportzPoint
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