RIO DE JANEIRO, Brazil -- Rafael Nadal is back -- and its all about his back. Top-ranked Nadal injured his back warming up for the final of the Australian Open almost three weeks ago, eventually losing against Stanislas Wawrinka -- a match he was an overwhelming favourite to win. Nadal has practiced little since then, getting treatment at home in Mallorca. His first test comes in next weeks Rio Open, a new stop on the ATP Tour. "Well have to see how it goes," he said Friday. "I hope I can tolerate it." Nadal knows the clock is ticking. He made a comeback last season from a left knee injury, which kept him out of the 2012 London Olympics. Hes won 13 Grand Slams. Hes one behind Pete Sampras, and hes closing in on Roger Federers record of 17. Hes sure one got away in Australia. "In Australia I lost a good opportunity to add another Grand Slam," Nadal said. "It didnt happen. The opportunities are not infinite. They have an expiration date." Nadal has played more than 11 years as a professional, perhaps sustaining some injuries because of his big swings and attacking temperament. "I heard a lot of times in my career that I will have a shorter career because of my style of game," he said. "I really think its something that will not happen. If I stopped today, I already will have more than 11 years on tour." The Spaniard said hes still motivated, positive about the 2014 season. "I cannot predict the future for how long I will be here competing well," he said. "I cant say when thats going to end. The only thing I can say is today I feel happy about what I am doing. I am feeling motivation mentally to keep playing, to keep competing well." Hell be 30 when the 2016 Rio Olympics begin. He called winning gold in the 2008 Beijing Olympics "one of the best experiences" of his career. "It was a very hard moment for me when I made the decision not to play the Olympic Games in London," Nadal said. "After that, I always say my goal is to arrive to the 2016 Olympic Games here in Rio." White Sox Luke Appling Jersey .Y. - Lou Williams scored 21 points and the Toronto Raptors beat New York 81-76 on Monday night in the Knicks preseason home opener. White Sox Caleb Frare Jersey . Barnard, 28, was 1-0 with a 0.53 ERA in three appearances, including two starts, with San Angel o this season. He struck out 19 batters and walked just one in 17 innings pitched. He has previous American Association experience with the Lincoln Saltdogs, El Paso Diablos and Amarillo Sox. -- Manager Bob Melvin shuffled the Athletics batting order and got the type of production he was looking for from the top of the lineup. White Sox Jeanmar Gomez Jersey . After losing Brett Cecil to groin tightness on Friday, the Blue Jays watched as R. White Sox Paul Konerko Jersey .C. - The housecleaning continues for the B.Veteran skip Kevin Martin will have a much different lineup if he decides to return for another season on the mens curling circuit. Team second Marc Kennedy and lead Ben Hebert plan to leave Martins rink after this season to join reigning national champion Kevin Koe. Its the first major move of whats expected to be an off-season loaded with significant roster changes. As for the 47-year-old Martin, who has national, world and Olympic titles on his glowing resume, he plans to take some time after the season to consider his future plans. "I cant confirm that Im looking for a new roster," Martin told The Canadian Press on Wednesday from Napa Valley, Calif. "But I can confirm that Marc and Ben are going to curl with Kev, yeah. I havent decided if Im going to curl again at all." The timing of the news is less than ideal for Koe and his current lineup of third Pat Simmons, second Carter Rycroft and lead Nolan Thiessen, who will try to put the distraction aside as they prepare to play at the world championship in Beijing this Saturday. Koe preferred to keep his focus on the upcoming competition and respectfully declined comment. Rycroft, whose wife is pregnant, has already said hell be taking a year off from the sport after this season. Simmons and Thiessen were not available for comment and their future plans remain unclear. Hebert declined comment and a message left with Kennedy was not immediately returned. Martin said it was unfortunate that the news surfaced during the season and before the world championship. "I sure wish none of this stuff (came) out," he said. "Im not exactly sure how it did but its too bad." With the Olympic season nearly complete, several roster changes are expected as teams prepare for the next four-year cycle. Team Brad Jacobs, which won gold at the Sochi Games last month, will be one of the rinks to beat next season. Whats uuncertain at this time is what ripple effect the new Koe lineup might have on teams throughout the country.dddddddddddd. The 2014-15 season isnt necessarily critical as rinks start to look ahead to the 2018 Games in Pyeongchang, South Korea, but the sooner that players can lock in the better. Martin, Kennedy and Hebert teamed with John Morris to win Tim Hortons Brier titles in 2008 and 2009, going undefeated en route to the championship each year. They also won Olympic gold at the 2010 Games in Vancouver. Morris left the team almost a year ago and later joined Jim Cotters B.C. rink. Morris was replaced by Dave Nedohin and the current Martin lineup has enjoyed a strong season. Martin wasnt surprised at the pending departure of two of his teammates since they want to position themselves for the next Olympic cycle. "Having teams change and personnel change, thats just part of sport," he said. "Thats not unusual I dont think. Its just unfortunate that any of these changes -- and there are a lot of changes that are going to happen this year -- happen before the end of the (season). That should definitely happen in May." Martin added the moves make "perfect sense" for Kennedy and Hebert. The veteran skip expects to decide on his own future plans by the end of June. There is still one major event left on the curling calendar -- the April 15-20 season-ending Grand Slam Players Championships in Summerside, P.E.I. That competition was already shaping up to be an emotional one with Alison Kreviazuks announcement this week that it will be her last competition with Team Rachel Homan. The longtime second has decided to move to Sweden to be with her boyfriend. Joanne Courtney of Val Sweetings rink will join Homan, lead Lisa Weagle and third Emma Miskew next season. Homan is the reigning national champion and won silver at the world championship last weekend. Jerseys NFL China Cheap Adidas NHL Jerseys Wholesale Jerseys From China Cheap MLB Jerseys Wholesale China Jerseys NFL Jerseys China Discount Soccer Jerseys Wholesale Jerseys China China NCAA Jerseys Cheap Cheap Nike Dolphins Jerseys Cheap Nike Patriots Jerseys Cheap Nike Jets Jerseys Cheap Nike Bengals Jerseys Cheap Nike Browns Jerseys Cheap Nike Steelers Jerseys Cheap Nike Texans Jerseys Cheap Nike Colts Jerseys Cheap Nike Jaguars Jerseys Cheap Nike Titans Jerseys Cheap Nike Broncos Jerseys ' ' '