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 Sale . Manuel was offered a position the day he was fired. He accepted earlier this week and the team made the announcement Friday. Nike Air Max From China . Both players have lower body injuries that will keep them out of the lineup until at least January 31, which is the first game they can be activated from IR. https://www.fakeairmaxwholesale.com/ . The 19-year-old Olsen played 34 games with the Kelowna Rockets of the WHL this season. In that time, hes recorded 17 goals and 17 assists with 36 penalty minutes. Fake Nike Air Max For Sale . -- Eastern Kentucky thrives off creating havoc for others. Fake Nike Air Max China . Both players have lower body injuries that will keep them out of the lineup until at least January 31, which is the first game they can be activated from IR.The U.S. womens gymnastics team cruised to a gold medal in the team competition at the Rio Olympics on Tuesday, and excited reactions quickly poured in via social media.dddddddddddd ' ' '