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. Wholesale Air Max 90 Womens . There was no hesitation from the 40th-ranked Pospisil, from Vernon, B.C., who admitted that he cut back on his training sessions over the last few days to conserve energy as the long ATP season finishes next week at the Paris Masters. Discount Air Max 90 Mens . 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Wholesale Air Max 90 Black .Y. - Detroit goaltender Jonas Gustavsson has earned NHL first star of the week honours after winning in his first three appearances of the season. OAKLAND, Calif. -- Marcus Semien rounded third base on Josh Reddicks 10th-inning infield single, and Reddicks first thought was disbelief.Then Semien slid home for the game-ending run not long after Oakland wasted a big opportunity in the ninth.Semien scored from second base on Reddicks two-out infield single to lift the As to a 4-3 win over the Houston Astros on Tuesday night.It was a really good game for us, manager Bob Melvin said. There was a lot of fight tonight, for sure. A lot of good things transpired.The As rallied from three runs down and trailed 3-2 before Coco Crisps tying double off Astros closer Will Harris in the ninth.After the Astros stranded the bases loaded in the top of the 10th, Reddick won it with the sixth walkoff hit of his career.Semien singled with two outs off Pat Neshek (2-2) and stole second. Yonder Alonso walked before Reddick singled to deep shortstop. Houstons Carlos Correa fielded the ball cleanly but threw wide of home as Semien slid safely in with the winning run.I was wondering why he was going and being sent in the first place, Reddick said of Semien. Then I saw the throw and I was like `Thank you, thank you, thank you. I think hed agree he had no business going. But sometimes you have to push the issue, and it worked.Crisp finished with two hits while Ryon Healy added two hits and two RBI for the As. Oakland has won four of five since the All-Star break.Jose Altuve matched his career-high with four hits while George Springer hit his career-high 21st home run for the Astros.Definitely a winnable game, Houston manager A.J. Hinch said. Really this game was more about us not being able to close the game out. Late in the game it never felt like we had enough runs and it turned out we didnt.Mark Rzepczynski (1-0) got the last out in the top of the 10th for the win.Houston starter Dallas Keuchel took a shutout into the seventh before giving up consecutive one-out hits to Billy Butler and Jake Smolinksi. Healy followed with a two-run double off reliever Ken Giless to pull the As to 3-2.ddddddddddddOakland tied the game in the ninth with back-to-back doubles by Stephen Vogt and Crisp. Crisp thought he had homered and slowed rounding second before getting caught in a rundown.Altuve padded his majors-leading hit total with his sixth four-hit game of the season. Houstons All-Star second baseman singled in the first, doubled and scored in the third and tripled and scored in the fifth. He struck out looking in the eighth and singled again in the 10th.Keuchel allowed two runs and five hits over 6 1/3 innings. The reigning AL Cy Young Award winner, who beat the As in his final start before the All-Star break, struck out six and walked three.A STEP FORWARDAs starter Daniel Overton, who was called up from Triple-A Nashville before the game, allowed three runs over 6 1/3 innings. The rookie left-hander struck out six and didnt walk a batter for the first time in three career starts.ROAD WARRIORAltuves three hits raised his AL-leading average to .352 and extended his road hitting streak to 18 games. The diminutive infielder has also reached safely in 34 consecutive road games, the second-longest streak in Astros history.TRAINERS ROOMAthletics: Rich Hills status remains in limbo because of a blister on the middle finger of his left hand. Hill left his most recent start Sunday after throwing just five pitches. ... RHP Andrew Triggs was placed on the 15-day disabled list with a bruised left shin. ... INF Tyler Ladendorf was optioned to Triple-A Nashville and LHP Daniel Coulombe was called up from the minors.UP NEXTAstros: RHP Doug Fister (9-6) pitches the finale Wednesday afternoon at the Coliseum and has two wins and a 1.31 ERA in three starts against Oakland this season.Athletics: RHP Daniel Mengden makes his second start against the Astros this season. He allowed six runs over 4 2/3 innings but took a no-decision in Houston on July 8. ' ' '