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Serena Williams is the toughest player, mentally, in the world,' says old rival ahead of semi-final clash - Tennishead
TENNIS on Twitter: "What were the toughest matches Serena Williams, Roger Federer, Rafael Nadal, Naomi Osaka and Novak Djokovic have ever faced? We look back at when five of the game's greatest
TENNIS on Twitter: "What were the toughest matches Serena Williams, Roger Federer, Rafael Nadal, Naomi Osaka and Novak Djokovic have ever faced? We look back at when five of the game's greatest
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Federer was the toughest opponent from the Big Three. He was...': Denis Istomin | Tennis News - Hindustan Times
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Ranking the 5 Most Physically Gifted Tennis Players on the ATP Tour in 2015 | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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