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(5) Cilic vs. (8) Isner (Round Robin)

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Djokovic dismisses Zverev at ATP Finals

Novak Djokovic quickly dismissed Alexander Zverev 6-4, 6-1 to secure his second win of the week at the ATP World Tour Finals in London on Wednesday.

Djokovic takes big step towards ATP semis

World number one Novak Djokovic took a big step towards the semi-finals at the ATP Finals with a clinical victory over Alexander Zverev.

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World Tour Finals

Federer outclasses Thiem to keep ATP Finals hopes alive

Six-times champion Roger Federer avoided an early exit from the ATP Finals as he rediscovered his form to outclass Austria's Dominic Thiem 6-2, 6-3 at the 02 Arena on Tuesday.

Federer: Preferential treatment claims not true

Roger Federer said he and his team occasionally make requests but that tournaments also ask him if he would mind playing on a particular court, at a particular time, often to suit the needs of television.

Federer rebounds to keep ATP Finals hopes alive

Roger Federer rediscovered his best form in a 6-2, 6-3 victory over Austria's Dominic Thiem at the O2 Arena.

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Watch: Best of World Tour Finals

Federer reveals the benefits of canceling practice

Roger Federer explains how a canceled practice session was behind his improved performance against Dominic Thiem.

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Anderson thrashes Nishikori 6-0 6-1

Kevin Anderson thrashed Kei Nishikori 6-0, 6-1 on Tuesday to move to the brink of the last four on his ATP Finals debut.

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Federer: I'm focused more on winning ATP Finals than 100th title

Roger Federer hailed Novak Djokovic's determination to rise back to the top after his injury and insists he wants to win the ATP Finals because of the tournament's prestige.

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Stefanos Tsitsipas

Serena Williams' coach expects big things from Stefanos Tsitsipas, and so should you

He's become something of a superhero in Greece, and it's only a matter of time before the entire world knows Stefanos Tsitsipas.

Tsitsipas continues Next Gen run with Tiafoe win

Stefanos Tsitsipas is in pole position to advance to the semifinals of the ATP Next Gen Finals after securing a straight-sets victory over Frances Tiafoe.

Paris Masters

Welcome to the 'Next Big Thing' club, Karen Khachanov

He's big strong and talented. Karen Khachanov beat Novak Djokovic to win the Paris Masters, a win that immediately thrust the Russian into elite, but often disappointing, company.

Khachanov stuns Djokovic to win Paris Masters

Karen Khachanov upset a tired-looking Novak Djokovic 7-5, 6-4 to win the Paris Masters title and deprive Djokovic the chance on Sunday of matching Rafael Nadal's record of 33 Masters titles.

WTA Finals

Examining the WTA through a transition lens

It was the first year since 2011 that Serena Williams didn't win a major, as players like Elina Svitolina yearn for consistency.

Svitolina beats Stephens to win WTA Finals

Elina Svitolina became the first Ukrainian player to win the season-ending WTA Finals trophy, beating Sloane Stephens to secure the biggest title of her career on Sunday.

Serena's season

Why 2018 could be Serena Williams' most impactful year yet

Serena Williams showed us much more than a tennis cape in 2018. She showed us her human side.

Final word: Our take on Serena Williams' 2018 season

There were ups and downs along the way, but based on her 2018 season, Serena Williams proved she still has plenty of top-level tennis left.

Serena's coach supports in-match coaching

Serena Williams' coach says in-match coaching should be allowed in tennis to help the sport's popularity.

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