Novak Djokovic says he would not regard it as a surprise if he wins his battle with Andy Murray and returns to the top of the world rankings just two weeks after surrendering his No 1 status.Djokovics 122-week reign as No 1 was ended by Murrays success at the Paris Masters, but the race to secure first place in the year-end rankings is set for a dramatic conclusion at the ATP World Tour Finals, live on Sky Sports. Highlights of Novak Djokovic against stand-in David Goffin in the round robin stage of the World Tour Finals The Serb reached the semi-finals with three successive victories after defeating Belgiums David Goffin 6-1 6-2 at Londons O2 Arena on Thursday. Djokovic must wait to see who faces in the semi-finals but he goes into the last four knowing his fate is in his own hands, as he is certain to overtake Murray if he wins the Tour Finals for a fifth successive year and record-equalling sixth time. Six months half price Upgrade to Sky Sports to watch Man Utd v Arsenal on Saturday and get the first six months half price That scenario would be the perfect way to round off an unusually inconsistent season for the 29-year-old, who has struggled since winning the Australian and French Opens earlier this year.Asked if he would be surprised to regain the top ranking so soon after losing it, Djokovic said: Well, I have not the same perception of surprise as you do. To me, that wouldnt be a surprise. Andy Murray will be hoping to retain his world No 1 status Djokovic has lost just one match at the Tour Finals since 2012, while Murray has never reached the final.The Scot might not be best placed to hold off Djokovics charge as he will have to play three days in a row following his three-hour marathon win against Nishikori on Wednesday, while his rival benefits from a recovery day. Thats obviously something that you wish for as a player, to have everything in your hands, not to depend on other players, added Djokovic.In this particular case, Im glad that its like that. Everything has been going in a positive direction. Djokovic says players should be given warnings before they are given time violations by umpires Ive been playing better and better as I proceed in the tournament. I have now a day of rest.Its the last couple matches of the year, hopefully. One thing is for sure: Im going to give it all on the court and see what happens.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-finalsWATCH: Murrays double takeRaonic can only get betterMurrays service syndrome over?Nike Air Max 95 Wholesale China .Y. -- Sabres forward Drew Stafford has witnessed plenty of turmoil during his eight seasons in Buffalo. Air Max 95 Mens Sale .C. -- Kemba Walker and the Charlotte Bobcats got off to a fast start, and the Sacramento Kings were never quite able to catch up. http://www.wholesale95airmax.com/air-max-97-mens-sale.html . There was no hesitation from the 40th-ranked Pospisil, from Vernon, B.C., who admitted that he cut back on his training sessions over the last few days to conserve energy as the long ATP season finishes next week at the Paris Masters. Air Max 95 Womens Sale .Y. -- Buffalo Bills coach Doug Marrone has drawn on his Syracuse connections once again by hiring Rob Moore to take over as receivers coach. Air Max 97 Womens Clearance .S. hockey team after paying his dues as an NHL general manager for more than three decades and giving up a lot of his free time to help USA Hockey.Mark Coyne has made it a personal mission to turn St George Illawarras NRL fortunes around, but admits the responsibility ultimately lies with coach Paul McGregor and chief executive Peter Doust.The former Dragons skipper has been drafted in to help return the club to its competitive best following a wide-ranging review of their poor 2016 campaign.He will join sports scientist Dr Craig Duncan, and coaching and performance specialists Clare Prideaux and Dirk Melton on a four-person football committee for a series of meetings over coming months.Coyne, who spent more than a decade at the Dragons, said the groups aim was to make sure McGregor and his staff had the right systems in place to be successful as early as next season.Theres no reason why that cant happen, he told AAP on Thursday.I understand that fans are disappointed in the way the clubs performed in the previous few years. What the club is attempting to do now is address that by looking at building a football department that is a lot more focused on high performance.Theres no doubt that Mary (McGregor) is going to be under a bit of pressure. Im good friends with him, but my role is to make sure he and the people around him have the right focus to put 17 players on the field every day that are going to be extremely competitive.The rretired Australian and Queensland representative said he was taking his role - albeit very small - very seriously because part of his heart belonged to the club.ddddddddddddve gone for St George since I was seven years old and Ive had the honour of leading the club and playing with them for 12 years, he said.I absolutely have a lot of investment in that club and I want to see them get back to where they were in 2008, 2009, 2010 and challenge for the premiership.Apart from poor on-field execution, Coyne felt the playing roster was the Dragons biggest issue this season.But deciding who to let go and who to recruit was beyond the committees control.The CEO and the coach are ultimately responsible for the roster, and in my view, the roster certainly needs to be enhanced, he said.They are both jointly responsible for making sure that the roster is going to give them the best opportunity to win a premiership.Ill work hard with the committee to make sure that we provide the football department with the tools and the programs to be able to maximise their success, but then its over to them to implement and execute those programs to make sure that the club is successful. 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