Mark Petchey believes becoming world No 1 marks Andy Murrays finest achievement in tennis. Nike Air Max 1 Discount . Murrays march to the final of the Paris Masters, coupled with Novak Djokovics quarter-final exit to Marin Cilic, means the 29-year-old will take over from the Serb at the top of the world rankings on Monday.And Sky Sports tennis expert Petchey, who coached Murray during the early stages of the Scots career, says the three-time Grand Slam winner is finally being rewarded for years of hard work. Andy Murray says hes proud after becoming the world number one, replacing Novak Djokovic after 122 weeks For me its his greatest ever achievement, Petchey told Sky Sports News HQ. Its a lifetime of work for his finest hour. There is so much that goes into being world No 1 anyway, but also at this stage of his career at 29, the fact he has just been behind Novak, Roger [Federer] and Rafa [Nadal] throughout the course of his career, to finally get to the summit of mens tennis underlines just how much Andy is willing to sacrifice and persevere and be patient. Live Tennis: ATP World Tour Finals November 13, 2016, 12:00pm Live on Get Sky Sports Get a Sky Sports pass All those ingredients go in, which is why for me it is his greatest achievement.Petchey is confident Murray will not rest now he is at the summit.The one thing about Andy is he will never relax, Petchey added. He always wants to get better and better and thats why hes become such a great champion. Murray won Wimbledon for a second time in the summer Speaking to his coach Jamie Delgado, after Wimbledon they went down to the Nadal Academy and his team were just blown away by the work ethic that he put into the training sessions there, after winning Wimbledon. That is the reason why this week we see him as world No 1, because there was no let down, he went straight back and worked.Petchey also believes the duel between Murray and Djokovic ensures an exciting end to the season, with both players battling to finish the year as the worlds best player. Novak Djokovic says Andy Murray deserves to become the world number one after raising his level in the last year The fact that the world No 1 is on the line for the World Tour finals is great and will be a spur for both players to produce their best tennis in the next couple of weeks, Petchey added. For Andy, to finish the year as world No 1 is a big deal. Lots of players have won a Grand Slam but failed to get to get No 1 at any stage of their career; there are even fewer players that have ended up year-end No 1 and for Andy to be able to achieve that will be enough of a drive for him continue this fantastic run. Murrays next aim is to end the year as world No 1 When he was 18, he didnt love the hard work. He always loved to play tennis, but now, he loves to work hard physically. He would have had a good career, he was that talented, but he wouldnt have become unique without investing in that hard work and growing on a daily basis to love it. Now hes arguably the hardest worker mens tennis has ever seen.Check our game-by-game updates from Andy Murray v John Isner from the ATP Paris Masters final and then follow his progress at the ATP World Tour Finals from London skysports.com/tennis, our app for mobile devices and iPad and our Twitter account @skysportstennis. Also See: Sky Live: Murray v Isner Murray proud of No 1 ranking Murray worthy of top spot Murray becomes world No 1 Air Max 1 Sale Cheap . Dirk Nowitzki scored 25 points, Shawn Marion had 22 and the Mavericks beat undermanned Philadelphia 124-112 Friday night, handing the 76ers their 10th straight loss. Air Max 1 Online Shop . Bjoergen pulled away from Swedens Charlotte Kalla on the final straight to win in 38 minutes, 33.6 seconds and defend her title from the 2010 Vancouver Games. Kalla was 1.8 seconds back. Heidi Weng of Norway took bronze. http://www.cheapairmax1outlet.com/ . Mike Babcock has turned to the Montreal Canadiens goalie over Roberto Luongo, who backed Canada to a gold medal in Vancouver in 2010, for Canadas final preliminary round game against the ailing Finns.PHOENIX - After a two-week absence, LeBron James was back in the Cleveland lineup when the Cavaliers met the Phoenix Suns on Tuesday night.The four-time MVP had taken time off to rest his sore left knee and lower back.Obviously were happy to have him back, Cavaliers coach David Blatt said before the game. Hes a very big part of our team, a dominant player in the NBA. I would just caution to be fair with him, he hasnt played competitive basketball for eight games, and thats not a normal thing for LeBron.Cleveland went 1-7 in James absence and had lost five in a row going into the game against the Suns. The Cavaliers fell to 19-19 and are sixth in the Eastern Conference.James practiced with the team on Monday, then made a quick trip to Texas to cheer on Ohio State in the college football national championship game. He said he got back to Phoenix at 12:30 a.m.Monday was the first time he had practiced since his layoff.At the morning shootaround, James said he felt a little sore, a little tight, which I figured.I havent done no basketball as far as live drills in two weeks, he said, so my bodys a little sore but not hurting. Nike Air Max 1 Wholesale. James said that sitting and watching the Cavaliers struggle was the most difficult thing Ive gone through.The team was six games above .500 when he shut it down.Weve got to approach every game with a sense of urgency, James said. I hated the fact we were playing some pretty decent ball when I went out. We lost a lot of games while I was out.Blatt said he wanted to limit James Tuesday night in the low 30-minute range if that.Im sure like any other human being it will take him a little bit of time to find his normal rhythm, Blatt said, but I know hell go out there and give us everything hes got.Veteran forward Shawn Marion also returned for the Cavaliers after missing two games with a left hip strain.It was the first time that James played with recently acquired guard J.R. Smith and centre Timofey Mozgov.Were still kind of in a flux, Blatt said, but its a heck of a lot better having those guys (James and Marion) out there. ' ' '