Kei Nishikori fell to an abject three-set defeat to Marin Cilic just 24 hours before facing Novak Djokovic in the last four of the ATP World Tour Finals. Nishikori had already qualified for the semi-finals and looked relaxed as he eased through the first set, but he then suffered a collapse and went on to lose 6-3 2-6 3-6.Cilics victory was the first of his career at the O2 Arena and the 200 ranking points it earned him mean he will end the year as the world No 6. Live Tennis: ATP World Tour Finals November 20, 2016, 3:30pm Live on Get Sky Sports Get a Sky Sports pass Shot of the matchTennis doesnt get much more entertaining than this lob followed by a hot dog followed by a volleyed winner. Cilic produced a delightful answer to Nishikoris hot dog Cilics reactionIt feels great. I played really good today and it was a pleasure to get a great performance for the end of the week. I felt I played well during the week, but I was a little bit unfortunate in those first couple of matches. Cilic gives his reaction after recording his first win at the ATP World Tour Finals Expert analysisGreg Rusedski: Cilic wanted to win a match here for the first time and getting to No 6 was huge for him. Its a career-high ranking, so there was a lot to play for and its good to see from Cilic.It just shows you how motivated this guy is and I think Jonas Bjorkman is going to do a great job with him in the off-season and he is going to come back a better player.Peter Fleming: Nishikori looked a little jaded tonight. Against Djokovic tomorrow night, he is going to have to run equally as much. But again, if he comes out, adrenaline flowing, you never know. Nishikori plays Novak Djokovic on Saturday evening The matchNishikori might have been forgiven for playing within himself and saving energy against Cilic, but he made a flying start and broke in just the third game.He continued to dominate points with his movement and ground strokes and sealed the opening set by breaking again in the final game. Cilic and Nishikori served up this superb rally However, a combination of Cilic finding his range and Nishikori badly losing his turned the match on its head and back-to-back breaks by the Croatian paved the way for levelling the match at one set apiece.Nishikori looked to have recomposed himself in the third, but he was broken after suffering a relapse in the fifth game and dropped serve again in the final game of what turned out to be chastening match.Watch every match of the ATP World Tour Finals live on Sky Sports, or follow them live on skysports.com/tennis and the Sky Sports app. Six months half price Upgrade to Sky Sports to watch Man Utd v Arsenal on Saturday and get the first six months half price Upgrade to Sky Sports now to watch Man Utd v Arsenal this Saturday and get the first six months half price! Also See: Murray makes O2 semi-finals Murray: I have to be clinical Murray will be ready for Milos Raonic can only get better Nike Air Max Plus Soldes . LaQuinton Ross scored 17 of his 20 points in the first half, hitting his first four 3-pointers, to send No. Air Max 95 Homme Pas Cher . Philbin said Thursday he wants players to treat one another with civility and he wont tolerate anything less. In taking questions for the first time since Ted Wells released his report into the bullying scandal that rocked the league, Philbin made it clear things would be cleaned up. http://www.maxnikepascher.fr/.What they got was a bevy of players chipping in to pick up the slack.Josh Smith scored 18 points and James Harden added 17 as the Rockets used a balanced scoring effort to outlast the Mavericks for a 99-94 victory. Air Max 95 Pas Cher Chine . The Tinkoff-Saxo rider was still dealing with the right shin he broke in a crash which ended his Tour de France on Stage 10. He hoped to defy his doctors and race in the home Grand Tour he won in 2008 and 2012, but he says there have been complications in his recovery. Nike Air Max 270 React Pas Cher . Smith, who raised eyebrows at the CFL combine in March with his ability on both sides of the ball, confirmed in a statement he tested positive for the anabolic steroid Stanozolol prior to auditioning for league officials.Melbourne, Australia (SportsNetwork.com) - World No. 1 Serena Williams and former top-ranked star Venus Williams secured berths in the quarterfinals at the 2015 Australian Open. Serena dropped the first set before rallying to top rising 24th-seeded Spaniard Garbine Muguruza 2-6, 6-3, 6-2 in two hours at Melbourne Park on Australia Day. Muguruza stunned Serena at the French Open last year, handing the American, who won just four games in that match in Paris, the worst loss of her Grand Slam career in the process. The 33-year-old American great blitzed her 21-year-old opponent with 17 aces and won 38 of 49 first-serve points on Monday. It was a great match -- congratulations to Garbine, she played so well, Serena said. The 18-time Grand Slam champion and reigning U.S. Open titlist owns five Aussie Open titles, but none since 2010. Her quarterfinal opponent will be 11th-seeded Slovak Dominika Cibulkova, who doused on-the-mend Belarusian star Victoria Azarenka, 6-2, 3-6, 6-3. Azarenka led 2-0 in the third set, but couldnt hold on against the diminutive Cibulkova. Today I wasnt thinking about the score, I was just going for it, Cibulkova said. And when I was up, I was going for it even more. I always have tough matches with Vika. The tennis she plays goes well with mine, Cibulkova added. Cibulkova was last years Aussie runner-up to since-retired Chinese star Li Na. The former world No. 1 Azarenka is a two-time Aussie Open champ and two-time U.S. Open runner-up. Her 2014 season was interrupted by a foot injury and shes been trying to re-locate her game since last spring. This marks Azarenkas earliest exit from the Aussie since 2011. I take it as progress. I think there are a lot of the positive things to take from here, she said. Overall, I can be pretty happy. In other fourth round action on Day 8 of the fortnight, an 18th-seeded Venus reached her first major quarterfinal since 2010 and remained undefeated in 2015 by surprising sixth-seeded former Wimbledon runner-up Agnieszka Radwanska 6-3, 2-6, 6-1 and rising Madison Keys vanquished fellow American Madison Brengle 6-2, 6-4.dddddddddddd Brengle reached her first-ever WTA final in Hobart two weeks ago. Venus will clash with the 19-year-old Keys in an all-American quarterfinal on Wednesday. Venus is a seven-time Grand Slam champion who was the 2003 Aussie runner-up to her younger sister. Shes a perfect 9-0 this year, including a title in Auckland three weeks back. The 34-year-old Venus was asked what her inspiration has been to keep plugging away all these years. Definitely my sister Serena, she replied. Shes just the ultimate champion. She definitely gives me a lot of inspiration. And of course all of my fans, whove always stayed behind me. Keys will play in her first-ever Grand Slam quarterfinal when she faces Venus. It feels really good, she said. My mom texted me before the tournament. She said, Its your last Grand Slam as a teenager, and sent me a bunch of grandma faces. Im like, Thanks for reminding me mom! Thank you. Love you. But its huge. Its my last Slam as a teenager. I hope I can keep it up. The quarterfinals will get underway Tuesday, as second-seeded former No. 1 Maria Sharapova will battle seventh-seeded Wimbledon runner-up Eugenie Bouchard and third-seeded French Open finalist Simona Halep will take on consistent 10th-seeded Russian left-hander Ekaterina Makarova. Sharapova is 3-0 all-time against the Canadian Bouchard, including some French Open match wins in 2013 and last year, while Halep is 1-0 lifetime versus Makarova. The reigning French Open champion Sharapova was the Aussie champ in 2008 and runner-up in 2007 and 2012. ' ' '