LONDON - In a potential blow to Switzerlands Davis Cup ambitions, Roger Federer pulled out of the ATP Finals less than one hour before his title match against Novak Djokovic on Sunday, handing a third straight title at the year-end event to the top-ranked Serb.The 17-time Grand Slam champion said he hurt his back in the nearly three-hour semifinal win over Davis Cup teammate Stan Wawrinka on Saturday night in which Federer saved four match points.Unfortunately Im not match fit, the 33-year-old Swiss told the crowd at the O2 Arena. I tried everything I could last night, also today: painkillers, treatment, rest, so forth, warm-up, until the very end. But I just cant compete at this level with Novak. It would be too risky at my age to do this right now and I hope you understand.Fans appeared to be supportive with applause for Federer when he spoke.The Swiss is set to play for Switzerland in the Davis Cup final against France, starting Friday. If he recovers in time, Federer will be chasing the only major trophy still eluding him. France hosts the match in the northern city of Lille and has opted for clay, a slow surface that could further thwart Federers chances to perform well.I dont think he was calculating and trying to save his body for Davis Cup final, said Djokovic. This is probably the biggest match of the season next to the final of a Grand Slam. I spoke to him, its a question mark for the Davis Cup final as well.It was only the third time in Federers career that he withdrew, each time due to a back injury, following walkovers in 2008 at the Paris Masters and in 2012 in Doha.Following back problems that ruined his 2013 season, Federer enjoyed a superb resurgence this season, losing to Djokovic in an epic Wimbledon final and adding five new titles to his collection.Federer, the most successful player at the ATP Finals with six wins, also made it to the semifinals at the Australian Open and the U.S. Open and won his 23rd Masters title in Shanghai last month. He remained on course for the year-end No. 1 spot until this week and had dropped just one set on the way to the final.I think you have some recurrent things coming back from time to time, the second-ranked Federer said. Its not that much of a surprise. I must say Ive been feeling really good for over a year now, which has been not a surprise, but its been very nice. So this back spasm, whatever it might be, its just not a fun thing to have during the day. Its just uncomfortable. But Im positive and Im hopeful that its going to go away very soon.Djokovic became the first player since Ivan Lendl from 1985-87 to win the year-end event three times in a row but was not in the mood for celebrations.You never like to win, especially these big matches against big rivals, with the retirement, said the four-time champion.Unbeaten on indoor courts in more than two years, Djokovic finished the season No. 1 for the third time in four years, becoming the seventh man to accomplish the feat at least three times. Besides winning his seventh Grand Slam title at the All England Club, Djokovic was also runner-up at the French Open, and won six titles.Right now Im at the pinnacle of my career, he said, adding that winning at Roland Garros would be one his main goals in future years. I physically feel very fit. As long as it is like that, Im going to use these years in front of me to fight for No. 1 of the world and the biggest titles in the sport.Instead of facing Federer, Djokovic played an exhibition with Andy Murray before a doubles match pitting Murray and John McEnroe against Tim Henman and Pat Cash.Federers withdrawal marked the first walkover in a final in the tournaments 45-year history. Cheap Custom Jerseys Store . Yet now its time for the most important pick of them all; the Grey Cup. The thought of going 5-0 with the correct choice is quite intoxicating, I dont think I have ever gone perfect in my CFL futuristic playoff speculations and would take great pride in guessing - I mean analyzing - correctly. Wholesale Custom Jerseys Free Shipping . Winning more at home probably should be on the list. The Flames look to avoid a fifth defeat in six home games by winning a sixth straight meeting with the Edmonton Oilers on Saturday night. http://www.customjerseyschina.com/. It looked like being another miserable day for Moyes when Ashley Westwood put Villa in front from a 13th-minute free kick. But Rooney headed United level seven minutes later, and the striker netted his 16th of the season for the struggling champions from the penalty spot before halftime. Wholesale Custom Jerseys . Pinch-hitter Tommy Medica singled in the go-ahead run in the eighth inning and the Padres beat the Seattle Mariners 2-1 in their first home game since Gwynn died of cancer Monday. Sale Custom Jerseys . - Benched Tampa Bay Buccaneers quarterback Josh Freeman said he has Attention Deficit Hyperactivity Disorder and voluntarily entered the NFL substance abuse program more than a year ago after mistakenly taking a medication to treat the condition.INDIANAPOLIS -- While his team struggled with setup and speed, Scott Dixon has flown under the radar during preparations for the Indianapolis 500. Its exactly how he wants it. Its how he has tried to be his entire career. "I like to live simply," Dixon said. As such, one of the most decorated drivers of the last decade goes grossly underappreciated for his accomplishments. Hes the Jimmie Johnson of IndyCar, the driver tearing through the record books with his eye on the top names in series history. Dixons 33 career victories rank seventh all-time, and three more wins would leapfrog him past Al Unser Jr. and Bobby Unser into fourth place. The only drivers who rank higher than Dixon in victories right now have the last name Andretti, Foyt and Unser. Since joining Chip Ganassi Racing in 2002 while the team still raced in the now-defunct CHAMP Car Series, Dixon has won at least one race in every season except two. He has an Indianapolis 500 win on his resume, and his three IndyCar championships -- spread out in 2003, 2008 and 2013 -- show a consistency and longevity thats hard to match. At just 33 years old, he conceivably has almost another decade of racing ahead of him. But hes worked in the shadow of some huge personalities and some of open-wheel racings biggest stars. When Dario Franchitti joined the Ganassi organization in 2009, Dixon watched his famous teammate reel off three consecutive championships and two Indy 500 wins. In that same span, Dixon finished second in the championship once, third three times, and finished second to Franchitti in the 2012 Indy 500. Living in Franchittis shadow never bothered him. "I preferred that, actually," said Dixon, who will start Sundays Indy 500 in 11th, in the fourth row. "When I come out of the truck and everyone is standing around waiting, they all chased after Dario and I could just get on the scooter and ride off and get to work. Ive never had any problem not having the spotlight on me." Franchitti is on the sidelines now, forced into retirement last November from injuries suffereed in a crash at Houston a month earlier.dddddddddddd. The imposing 1-2 attack of the two red Target cars has been broken up. It means Dixon finally has the team to himself, but he doesnt view it that way -- he maintains its always been owner Chip Ganassis team -- and the laid-back New Zealander isnt seeking any fame. Its a shame, because hes earned the attention. "Hes achieved so much, hes one of the most successful of all time, but a lot of people dont know that," said reigning Indianapolis 500 winner Tony Kanaan, a fan favourite and Franchittis replacement this year in the Ganassi organization. "He just does his job. Is he more famous than me? Not really. But were not talking about that. Its not what his goal is. Hes doing exactly what he wants to do." Dixon excels at striving for more and putting in the work toward continuing to improve his race craft. "He doesnt stop learning. He doesnt allow what hes just done to be the high point in his life, in his career. He only uses that as a springboard for the next day," said Mike Hull, Ganassis managing director and the strategist atop Dixons pit stand. "We just do not stop learning together, and he represents us. I wish we could clone him, to be honest about it, moving forward because hes the kind of person you need driving your race cars." In his 13th season with Ganassi, Dixon is easily the longest tenured driver in organization history. The team owner says the longevity is because Dixon "doesnt seem to carry much baggage with him." For an owner who dislikes drama or having to massage egos and manage personalities, Dixon is his easy child. As for where Dixon ranks among the all-time greats, Ganassi doesnt want to be part of the conversation. "Were obviously very proud to have Scott," Ganassi said. "When you talk about legacies ... that will be something someday for you in the media to talk about. I dont think its our position in the race team to talk about that. We certainly think his name deserves to be up there as well." 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