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ATP World Tour Finals 2015: Roger Federer calls for stricter tennis drugs testing to preserve sport's image | The Independent | The Independent
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ATP Tour on Twitter: "#ATP confirms London as host city for #FinalShowdown through 2018. More: https://t.co/hatZ7ixt7H #tennis https://t.co/EBjwLnhKrD" / Twitter
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ATP World Tour Finals 2015 - Djokovic rules with record win - The Championships, Wimbledon - Official Site by IBM
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