Defending champion and world number one Novak Djokovic retired from the round of 16-match against Stan Wawrinka in the ongoing US Open after he suffered pain in his left shoulder on Sunday evening.

US Open: Djokovic retires after shoulder injury, Wawrinka reaches quarter-finals

Top-ranked defending champion Novak Djokovic rolled into the US Open fourth round on Friday while Serena Williams and Roger Federer cruised into the last 16 and Kei Nishikori was eliminated.

Djokovic rolls on while Federer, Serena breeze at US Open

Three-time French Open champion and former world no. 1 Arantxa Sanchez Vicario analyses the contenders in the men's and women's draws ahead of the year's second grand slam. She thinks Rafael Nadal remains the firm favourite for a twelfth title, and considers defending women's champion Simona Halep as her own biggest threat.

WION Sports: Arantxa Sanchez picks her French Open favourites

Novak Djokovic said he was relishing locking horns with his "greatest rival" Rafael Nadal as the pair set up the 54th clash of their careers Saturday in the Italian Open final.

'The ultimate challenge': Novak Djokovic to meet Rafa Nadal in Italian Open final

World number one Novak Djokovic took out his frustration on the racket in a scrappy performance but did enough to overcome German Philipp Kohlschreiber in a 6-3 4-6 6-4 win in the second round of the Monte Carlo Masters on Tuesday.

Novak Djokovic survives Kohlschreiber scare in Monte Carlo

Young German Alexander Zverev's breakthrough title at the ATP Finals in London last month brought the future into focus but the year ended with men's tennis in the grip of a block of 30 somethings led by a resurgent Novak Djokovic.

Novak Djokovic back on top as old guard refuse to let go

Novak Djokovic produced a masterful display to outclass South Africa's Kevin Anderson 6-2, 6-2 on Saturday (November 17) to set up an ATP Finals title showdown with Alexander Zverev.

Novak Djokovic thumps Anderson to set up final clash with Zverev

The former champion and 12-time winner Djokovic says, 'I don't know if I'm going to play on the grass'

Novak Djokovic says he may skip Wimbledon after French Open ouster

After crashing out, admitted that he had been struggling with a niggling injury throughout the match

Watch: Bad tempered Djokovic gives bizarre press conference after French Open exit

Nadal took one hour and 56 minutes to beat his Serbian opponent.

Italian Open: Rafael Nadal beats Djokovic to reach final

Fifth seed Dominic Thiem came from behind to knock out Novak Djokovic in the Monte Carlo Masters third round on Thursday and set up a quarter-final clash with defending champion Rafa Nadal

Dominic Thiem upsets Djokovic in Monte Carlo to set up Nadal clash

Novak struggled to rediscover his form following a long elbow injury layoff

Djokovic ends partnership with coach Stepanek following Agassi split

Djokovic, playing the week before Wimbledon for the first time since 2010, captured his 68th career title

Djokovic, Pliskova win Eastbourne titles to stake Wimbledon claim

Djokovic and Nadal are each one win away from meeting in the finals, but Novak has a tougher draw

Ominous Nadal back on court in Paris

World number two Djokovic slumped to a stunning 7-6 (7/5), 6-3, 6-0 quarter-final loss to Dominic Thiem

French Open: Djokovic crashes as Nadal, Murray move on to semi-finals

Nadal continued his ruthless form at Roland Garros by dispatching Spanish 17th seed Roberto Bautista Agut 6-1, 6-2, 6-2

Nadal, Djokovic enter French Open quarter-finals as champion Muguruza exits

Meanwhile, defending champion on the women's side, Garbine Muguruza, struggled to win her second round match

French Open: Nadal, Djokovic storm into round 3; Kvitova's fairytale over

1999 French Open champion Andre Agassi was in the players' box for the first time after agreeing a short-term coaching role with Novak Djokovic

French Open: Nadal, Djokovic sail into round 2

World number one Andy Murray, meanwhile, has a potential third round against Juan Martin del Potro

French Open draw: Nadal, Djokovic set on collision course

The young German beat the former world number one in straight sets

Rome Masters: Zverev stuns Djokovic to lift title

Goffin awaits the winner between nine-time champion Rafel Nadal and Diego Schwartzman

Monte Carlo Masters: Djokovic dumped out by Goffin

Spaniard Albert Ramos played unrelenting Tennis to dislodge Andy Murray at the Monte Carlo Masters

Monte Carlo Masters: Andy Murray, Wawrinka crash out

Kyrgios triumphed 6-4, 7-6 (7/3), notching his second victory over Djokovic in less than two weeks

Nick Kyrgios beats defending champion Novak Djokovic at Indian Wells

Djokovic won 6-3, 5-7, 6-4 in a high-quality, action-packed match between the two best players in the world lasting almost three hours

Novak Djokovic beats Andy Murray to win Qatar Open

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