Joe Gibbs Racing Xfinity Series driver Matt Tifft is out indefinitely after doctors found a brain tumor while treating him for a disk condition in his back.Tifft had surgery Friday afternoon, and his family said on his Twitter account Friday night that he is out of surgery and doing well.Tifft, 20, will need to spend time in rehabilitation before being cleared to race again.The tumor was about the size of a half-dollar and was located on the right side near his temple, about an inch into his brain at the deepest point, Tifft said in an interview Wednesday. It was not cancerous but had the potential to grow aggressively.Once doctors can test the tumor and know whether it was completely removed, Tifft will know the recovery plan and find out if he needs any chemotherapy or radiation.If not for the disc problem in his back, Tifft would never have known about the tumor. He said he had a concussion when he was younger and has always had some sensitivity to light. So he figured since he was having an MRI on his back, he had might as well have his head scanned. That is when doctors found the tumor, which Tifft said he might have had for years.We kind of lucked out that we found it when we did, Tifft said. Its not lucky it was there, but we are lucky that we caught it in plenty enough time. ... You never want to be thankful to be hurt, but in this case in a way, its bizarre how it worked out. ... Without that [back problem], who knows if I ever would have gone in?Tifft has competed in six Xfinity races this year, including three in the JGR No. 18 car. He sat on the pole in April at Talladega, where he finished a career-best eighth. He also finished eighth two weeks later at Dover.This has definitely been a breakout year, Tifft said. Its definitely a tough spot to be taken out right in the middle of your limited races. But I feel like, in a good way, where Im at in my career, I have really proven what I can do this year.This is just something Ive got to work through. ... Im just really appreciative of all the support [from the racing community] Ive gotten already. Its been pretty overwhelming.In addition to his part-time Xfinity schedule, Tifft was driving a part-time Camping World Truck Series schedule in the Red Horse Racing No. 11 truck. He finished a career-best fifth in his most recent outing in May at Charlotte. He has seven top-10 finishes in 18 career truck starts.David Ragan will replace Tifft in the JGR No. 18 Xfinity Series car this weekend at Daytona.Air Jordan 4 For Sale . Already owning gold from competition in Vancouver in 2010, Loch posted a combined four-run time of 3:27.526. That included a track-record third run of 51. Cheapest Air Jordan 4 . Those lessons were more than enough to overwhelm the Utah Jazz. Lou Williams scored 25 points and the Hawks continued their offensive upswing as they rolled to an easy 118-85 victory over the Jazz on Friday night, winning their third straight and for the fourth time in five games. http://www.airjordan4wholesale.com/ . The No. 1-ranked Nadal tweaked his back warming up for the Australian Open final, which he lost almost four weeks ago in a major upset against Stanislas Wawrinka. His first stop after the layoff is the clay in Rio as he tests the back and tries to stay healthy for the French Open in three months. Air Jordan 4 Sale . 8 Iowa State on Saturday, sending the Cyclones to their third consecutive loss. The Longhorns (14-4, 3-2) got their biggest win of the season with their third in the row in the Big 12. Cheap Air Jordan 4 Shoes . It is a cliché dragged out by fans and pundits regularly when discussions take place around which teams are better than others.KAMLOOPS, B.C. -- Matt Walker missed all but the first game of the regular season with the UBC Thunderbirds in 2012 due to a major knee injury -- but the B.C. Lions drafted him anyway. Now, the defensive back is looking to prove the Lions made a good decision as he contends for a job at the CFL clubs training camp. "(The injury) has been a good learning curve, and its made me a better professional, I believe, because I know I cant control anything else," said Walker. "I have to control myself. And, I controlled my rehab, and I worked hard at it -- and Im here today." But to stick with the Lions, he will have to master an unfamiliar position quickly. The 21-year-old Vernon, B.C., native is in contention for a job at safety as the Lions look to replace Cauchy Muamba, who bolted to the Winnipeg Blue Bombers as a free agent in the off-season. "When you look at our needs and the potential for the conversion to happen for him, I look at him as a free safety," said Lions coach Mike Benevides. "When you look at his speed and when you look at his heart and skill set, how he plays with a physical edge, thats where he has the best opportunity to compete." Before transferring to UBC, Walker played on offence in two seasons with the University of Saskatchewan Huskies and his former Okanagan Sun junior team. At UBC, he briefly played defensive halfback. "Ive only played three games at safety in junior and two games at defensive halfback (with UBC)," said Walker, who also played an exhibition game with the Thunderbirds. "But I used to play quarterback and slotback. When I was running a (pass route), Id always be watching the safety to see what my read was going to be to beat the offence." Recalling his days on offence, Walker tries to go to the spots where he knows the receiver does not want the safety to be. But Benevides said Walker will also have to prove that he can earn a spot on special teams. Muamba also played special teams, and the Lions need to fill another hole on kicking units following James Yurichuks departure to the Toronto Argonauts as a free agent. Benevides has been impressed with what he has seen of Walker on the field thus far. The coach also liked the way he battled back from an injury that threatened his CFL career before it got started. "Theres a lot to be said for him fighting through a devastating knee injury," said Benevides. ";Hes done everything he has to (in order) to try and get an opportunity to be here.ddddddddddddquot; Walker was injured in the Thunderbirds season-opener against the Manitoba Bisons and spent several months recovering. He still managed to get healthy in time for all necessary CFL combine and Lions tryout camps as well as several other informal workouts that B.C. defensive backs coach Mark Washington put him through in advance of the draft. Used to going all out at everything, Walker struggled not to do too much too soon during the rehabilitation process. "You really have to stay in your shoes, because if you dont and you do something dumb, then youre going to miss your whole shot," said Walker. After watching him succeed in his recovery quest, the Lions provided a new one by drafting him in the sixth round, 50th overall. "When the opportunity came, we wanted more depth at the free safety position," said Benevides. "So (Walker) was a perfect pick ... ." Walker is in line for a backup role to Muambas anticipated replacement. J.R. LaRose, entering his fourth year with the Lions and eighth in the CFL, has the starters job for now, pending his performance in exhibition games in Calgary and at home against Edmonton before season opener against the Stampeders on June 28 back at McMahon Stadium. In addition to his desire and determination, the Lions like Walkers passport. The starting and backup safety spots are ticketed for Canadians as the team manages the nuances of the CFLs import and non-import ratio. Benevides said Walker also has a good chance to earn a spot because CFL teams are expanding their practice rosters to nine players from seven this season. The two extra spots must be filled by non-imports in accordance with the leagues effort to develop more Canadian talent. If Walker does not stay with the Lions, he could return to UBC, where he has three years of collegiate eligibility remaining. But he is not overly keen on returning to the classroom, preferring instead to pursue his CFL dream after overcoming significant adversity. "Im making sure Im prepared to be a starter one day," he said. Notes: Centre Angus Reid remained out with a sore back Tuesday. He went to get examined by a specialist. a Offensive linemen Cameron Thorn (concussion) and Andre Ramsey, who underwent arthroscopic knee surgery, are sidelined indefinitely with injuries suffered in camp. ' ' '