Novak Djokovic continues his quest to regain the world No 1 ranking with a World Tour Finals semi-final showdown against Kei Nishikori. Vente Air Max Tn Pas Cher . The Serb saw his 122-week grasp at the top of the rankings ended by Andy Murray in Paris almost a fortnight ago, but he can reclaim the position depending on the outcome this week.First he must overcome Japans Nishikori and with a dominant 10-2 record in the head to head he will start Saturdays semi-final in confident fashion, especially after a week that has seen him return to somewhere close to top form. Novak Djokovic and Kei Nishikori have met in two finals this year - on Saturday they meet for a place in the World Tour Finals showpiece Djokovic lost his opening set of the week to Dominic Thiem last Sunday but recovered to win the match in three sets and followed up with another pair of victories over Milos Raonic and alternate David Goffin,He had to come through an epic content against Raonic, eventually prevailing 7-6 7-6 while he had little trouble against late replacement Goffin who was dispatched 6-1 6-2.Nishikoris last four place had already been assured after Murrays straight sets win over Stan Wawrinka earlier in the day. Having begun the week with a superb victory over Wawrinka, Nishikori lost his next two matches.Having pushed Andy Murray close in his second match before losing in three sets, he ended the group stages with another three-set defeat, losing to Marin Cilic in three sets on Friday night. World Tour Finals - Story So Far Novak Djokovic Kei Nishikori beat Dominic Thiem 6-7 6-0 6-2 beat Stan Wawrinka 6-2 6-3 beat Milos Raonic 7-6 7-6 lost Andy Murray 7-6 4-6 4-6 beat David Goffin 6-1 6-2 lost Marin Cilic 6-4 2-6 3-6 John McEnroe talks about the price of ending the year as the world No 1 While world No 5 Nishikori has been in fantastic form this season, reaching his second and third Masters finals as well as his second Grand Slam semi-final, he will have to overcome a run of form against Djokovic that has seen him lose his last nine matches against the Serb.Djokovic has won all five of their meetings this year, including victory in both the Canada and Miami Masters finals, while Nishikori has won just three sets in their contests since his last win, a memorable US Open semi-final success in 2014. Kei Nishikori has come as close as anyone to beating Andy Murray this week, losing in three sets in the group stage The pair have twice met at the O2, Djokovic winning in the group stage in both 2014 and last year where he was a 6-1 6-1 victor.The signs are ominous for Nishikori but the 26-year-old appears to be relishing the challenge against the very best these days and a win would see him beat his semi-final performance of his World Tour Finals debut a couple of years ago. Djokovic v Nishikori met in the Miami final earlier this year Djokovic v Nishikori met in the Miami final earlier this year As ever it will be a doubles match which kicks off the evening and after confirmation of their world No 1 ranking, Jamie Murray and Bruno Soares will hope to book a final place when they face Rajeev Ram and Raven Klaasen.Murrays position as the year-end No 1 was confirmed when the French pairing of Nicolas Mahut and Pierre-Hugues Hubert lost their third group game of the week on Friday.Murray and Soares claimed the Australian and US Open titles and have won two of the three matches the pair have played.Follow all the action from the O2 on Saturday when the action begins on Sky Sports 3 from 12pm and 4pm or via our live blog here at www.skysports.com/tennis. Also See: World No 1 permutations Djokovic hammers Goffin Nike Tn Pas Cher En France . That assertion is getting harder and harder to make, especially given the way 23-year-old Danilo Gallinari has been playing this season. Air Max Pas Cher En Ligne .Y. -- Syracuses streak lives on -- barely. http://www.airmaxpaschervente.fr/destockage-air-jordan-1-france.html . Each day, TSN.ca provides the latest rumours, reports and speculation from around the NHL beat. Keeping The Captain? Brian Giontas agent Steve Bartlett told La Presse on Tuesday that the Montreal Canadiens want to keep their captain - an unrestricted free agent on July 1 - in the fold, while sources tell the paper that the two sides will start talks this week.BOSTON - Depending on whom you ask, it was only a matter of time before the suddenly scorching Toronto Raptors experienced a setback, even a negligible one. Conditioned to be skeptical following years of false hope, the teams loyal albeit exasperated fan base - or at least a segment of it - has been weary of the dreaded letdown game. "Its the first stinker weve had," coach Dwane Casey said after his much-improved team was stunned by the lowly Celtics, falling 88-83 in Boston, a city in which the Raptors have gone winless over the last six years. It was bound to happen eventually. The Raptors had been remarkably consistent in potential trap games, winning 10 of their last 11 contests against teams with losing records. Still, no one truly believed they would run the table with more than half the season left to be played, no one outside the locker room that is. "No," Kyle Lowry said straight-faced when asked if he saw it coming. "We dont expect to have any letdowns." Its just one game, one night, one of 82. In and of itself, the loss – however disappointing – shouldnt be a cause for concern. Even the best of the best get caught taking their foot off the gas but that doesnt provide solace to a team thats learning to demand more of themselves. "They out-worked us tonight, which is rare for us," Lowry said, his team giving up 19 offensive boards to the Celtics, who had lost nine straight coming into the contest. "It sucks but weve got to learn from this. Everyones pissed off right now, guys are mad and we should be." The Raptors came out flat and could never quite find the groove theyve been playing with for the better part of the last month. It was their most disheartening loss since a Dec. 18 overtime defeat at home to Charlotte and their worst effort since the Spurs ran them out of their own building eight days before that. Leading the division, Toronto owned the best record in the Eastern Conference since its early-December trade. On the other end of the spectrum, the Celtics were quickly sinking to the bottom of the Atlantic, jettisoning their assists-leader to the West Coast hours before hosting the red-hot Raptors on Wednesday. Missing Jordan Crawford, who was traded to Golden State earlier in the afternoon, and Rajon Rondo - expected to return from injury on Friday - the Celtics caught Toronto napping. The Raptors should, but probably wouldnt, appreciate the irony. Undermanned just hours after the Rudy Gay deal was consummated, the Raptors upset the heavily favoured Lakers in Los Angeles just over a month ago. Sometimes youre the windshield, on Wednesday they were the bug. "It started on the boards," Casey said, as the Raptors were out-rebounded 20-7 in the third quarter, when the game began to slip away. Air Max 270 Pas Cher Chine. . "I was disappointed in our rebounding, we just got whipped in every way in the paint." Forward Jared Sullinger grabbed eight of his 20 boards in the third, en route to a career performance. The Celtics sophomore became the first player in the franchises rich history to record at least 25 points, 20 rebounds and four assists in a game since Larry Bird accomplished that feat in 1987. Needless to say, Casey was not thrilled. "None of our bigs did a mans job on the boards tonight (and) thats the ball game," he said. "Anytime you give up that many (second-chance) points, you can point to any big." Jonas Valanciunas had a rough night on both ends of the floor, shooting just 1-of-7 in 23 minutes of action. Amir Johnson was held under 26 minutes, having to leave the game early in the third after tweaking his left ankle. "They played harder than us," Johnson admitted. "We definitely should have come out and won this game." Johnson said the injury did not occur on a specific play, instead it just started to feel sore, similar to what he felt before undergoing surgery on the same ankle in 2011. "It was weird," said Johnson, who was able to return to the game in the fourth quarter after getting treatment in the locker room. "Once I got the tape on it, it felt fine, but it was weird." Johnsons brief absence was costly, Patrick Patterson who had been playing at a high level was underwhelming and Tyler Hansbrough - sitting out his seventh straight, also with a sprained left ankle - was missed. For the first time in over a month Steve Novak was asked to log meaningful minutes as Toronto played catch-up in the fourth. Although the Raptors knocked down 11 threes on 24 attempts from beyond the arch - their fourth straight game with 11 or more treys - both teams shot under 40 per cent from the field. While Boston connected on 26 of their 36 attempts from the line, the Raptors missed a devastating 13 free throws (on 25 attempts), including several down the stretch. Down by as many as 18 in the second half, the Raptors managed to fight back and cut their deficit to three with under a minute remaining. Missed free throws and poor late-game execution was their undoing. "We have to use this as a reminder," said DeMar DeRozan, who led the Raptors with 23 points. "It doesnt matter who we are playing. If its a team we are better than, whatever, teams are still going to go out there and play hard. Boston didnt give up at all. They kept the pressure going on us. They played hard tonight." ' ' '