It would be a fitting tribute after all his hard work and dedication to see Andy Murray defeat old foe Novak Djokovic in the ATP World Tour Final on Sunday, believes Mark Petchey. The worlds top two players had contrasting wins in the semi-finals at Londons O2 Arena on Saturday, with Murray surviving a match point to beat Milos Raonic 5-7 7-6 (7-5) 7-6 (11-9) in three hours and 38 minutes, the longest ever three-setter in the ATP finals.Five-time champion Djokovic needed just 66 minutes to dispatch Japans Kei Nishikori 6-1 6-1. Live Tennis: ATP World Tour Finals November 20, 2016, 5:45pm Live on Get Sky Sports Get a Sky Sports pass Murray arrived at the tournament needing to do better than the Serb to finish the year at the top of the rankings - a position he has held since winning the Paris Masters a fortnight ago. Now, that means winning the final.But Sky Sports Tennis analyst Petchey feels both players have a 50-50 chance of walking away with the coveted title on Sunday evening, although he thinks the ball is well and truly in Djokovics court. Murray must show belief Andy Murray must believe he can win Sundays ATP World Tour Final, says Greg Rusedski They can both win, but at this minute its advantage Novak given the quick nature of this match and to see what Andy went through emotionally and physically against Nishikori and Raonic, he said.But you cant get away from the fact that their match-ups have been very physical. Theyre both great returners, they both move great, theres lots of rallies. Highlights of the epic semi-final match between Murray and Raonic Although the court is medium fast, weve seen long matches here and a lot of rallies, so the physical aspect plays a huge part. How Andy wakes up tomorrow... I know its his last match of the year, but you cant magic energy into the legs.I just hope he feels 100 per cent for everybody here, the fans and most importantly himself. Djokovic sets up Murray final Novak Djokovic beats Kei Nishikori to reach ATP World Tour Final Murray, bidding to win the Tour Finals for the first time in his maiden final appearance, acknowledged he is feeling the strain of his gruelling run, but Petchey is adamant that he can produce one final career-defining moment.Winning means everything for Andy, but winning here is the culmination of hard work and the phenomenal effort that he puts into his sport and the sacrifices that hes made. It would be, I think, a fitting tribute, picking himself up so incredibly well to the loss at the French - those are big moments in his career, said Murrays former coach Petchey. Murray was exhausted after beating Raonic in the longest match ever in the competition He picked himself up to then go and win at Wimbledon, the Olympics and I actually think the adversity to pick himself up after defeats against Kei Nishikori [at the US Open] and Juan Martin del Potro [in the Davis Cup semi-finals] - he has picked himself up from those losses and gone on this run. He has been amazing. Murrays climb to greatness Andy Murray has climbed to the top of the tennis rankings A 24th victory of the season for the Scot would bring a fitting finale to the best year of his life and Petchey feels the debate for who is the world No 1 will finally be put to bed once and for all Sunday night.Andy is going to give Novak different spins, different pace, hes going to mix it up and hes not going to allow Novak the same kind of time on the ball and the same timing, so of course he can push him. Djokovic is looking forward to taking on Murray in Sundays final Its the first time ever the year-end number one is going to get decided here, with two players who have been clearly the best two players by a mile. You only need to look at the titles, the rankings, the points. We couldnt have asked for more.It will end the argument about who is number one. Everyone has got their debate and tomorrow, lets see who it is. Watch NOW TV Watch Sky Sports for just £6.99. No contract. Check our game-by-game coverage from ATP World Tour Final in London on Sunday as Andy Murray aims to secure the year-end world No 1 against Novak Djokovic. Follow us on skysports.com/tennis, our app for mobile devices and iPad and our Twitter account @skysportstennis to see how the drama unfolds. Also See: Murray reaches O2 final Djokovic sets up Murray final Murrays climb to greatness World No 1 permutations Tns Black Cheap . The 29-year-old from Port Colborne, Ont., has nothing but good things to say about former U.S. marine Liz (Girlrilla) Carmouche ahead of their co-main event Wednesday on the UFCs "Fight for the Troops" televised card in Fort Campbell, Ky. Air Max Plus Tn White . The 25-year-old Japanese star has officially been posted by his club team, the Rakuten Golden Eagles. http://www.airmaxplusstoresale.com/air-vapormax-plus-cheap/mens-discount.html . The Dane followed up his first European Tour title last weekend with eight birdies and just a single dropped shot on Thursday for a one-stroke advantage over South Africas Allan Versfeld and Portugals Ricardo Santos. Vapormax Plus Sale . -- Matt Rupert scored once in regulation and again in the shootout as the London Knights extended their win streak to nine games by defeating the Owen Sound Attack 4-3 on Friday in Ontario Hockey League action. Air Max Plus Cheap . -- Jimmy Walkers first PGA Tour trophy came with a special gift tucked inside.Demarai Gray is determined to prove himself and continue Leicesters success after being crowned Premier League champions. Chelsea came back from 2-0 to draw 2-2 against Tottenham in Monday nights feisty derby at Stamford Bridge that saw the Foxes achieve their first top-flight title since the club was formed 132 years ago.The club started the season as the biggest-priced outsiders available with Sky Bet offering odds of 5,000/1, resulting in their greatest-ever outright pay-out of £4.6m. The Foxes will lift the Premier League trophy on Saturday after their last home match against Everton.Gray, who joined the club in the January transfer window from Birmingham City, told Sky Sports News HQ: Obviously we have won the league so there is less pressure for everyone. But even beforehand I would have still gone for it. Claudio Ranieri says he felt there was something special in the Leicester squad, but never imagined they would win the Premier League I have to prove myself to everyone and I dont think anything could have worked out better for me.The 19-year-old admits that it also would have been great to have won the title against MManchester United on Super Sunday - but they were held to a 1-1 draw.ddddddddddddObviously if we had done it at Old Trafford that would have been nice as well, but Saturday is going to be the one, he said.Ive watched teams win the Premier League and celebrate ten times and thinking Im well away from that - but its happened now and its crazy. FA chairman Greg Dyke says Leicester and Tottenham have proven you can succeed with English players I think you just have to enjoy and embrace the whole situation. You never know. Throughout my career this may not happen again, its such a big achievement.Leicester finish their season at Chelsea, boss Claudio Ranieris former club, on May 15 and Gray wants to prove the he deserves his place in the champions squad.He said: I hope I play at the weekend as well and I want to express myself some more and show everyone what I what I can do. Also See: My son Claudio is King 2015/2016 Season Hiddink: Leicester wanted me WATCH: Dream comes true for Foxes fan ' ' '