RIO DE JANEIRO -- A female Chinese swimmer has tested positive for a banned substance at the Rio Olympics, Chinas swimming association said Friday -- the first competitor in the sport to fail a test at the games.Chen Xinyi tested positive for the diuretic hydrochlorothiazide after she finished fourth in the womens 100-meter butterfly Sunday, missing a bronze medal by nine-hundredths of a second, the Chinese Swimming Association said. Xinhua, Chinas official state news agency, reported the story Friday.The 18-year-old also was scheduled to compete in the 50-meter freestyle beginning Friday.Chen has applied to the International Olympic Committee to have her B sample tested and to get a hearing on the matter, Xinhua said, citing the swimming association.The CSA has taken this matter seriously and demanded full cooperation from Chen in the investigation, the association said in the statement quoted by Xinhua.Doping has been a major concern in the Rio Games. Seven Russian swimmers were allowed to compete after initially being banned following reports of a huge, state-sponsored doping operation in their homeland. That decision has sparked complaints from several swimmers, most notably American Lilly King.Also, Australian gold medalist Mack Horton feuded with Sun Yang over the Chinese stars three-month suspension for using a banned stimulant in 2014. Horton called Sun a drug cheat after beating him in the 400 freestyle. Sun insisted he was clean and came back to win gold in the 200 free. They will compete again Friday in the preliminaries of the 1,500 free.No statement about Chens reported test was posted on the CSA website, and calls to its offices rang unanswered Friday. FINA, the international governing body of swimming, did not immediately respond to a request for comment.Chens teammate Wang Shun declined to comment after he won bronze in Thursdays 200-meter individual medley.This situation, I dont know the details, Wang said.Li Keke, a spokeswoman for Chinas national anti-doping agency, said she had no additional information on the Chen case.We have noticed media reports about the case. So far the anti-doping agency has yet to receive any official confirmation, Li told The Associated Press.This reported test should be generated by the organizer. The Olympic committee and FINA should know about it. At present, we will continue to monitor, Li said. Cowboys Jerseys China . -- Linebacker Myles Jack ran for four touchdowns, defensive end Cassius Marsh caught a scoring pass, and No. Wholesale Cowboys Jerseys . 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DETROIT -- Matt Boyd has quietly been one of the Detroit Tigers most consistent starters in the second half of the season.Coming into Tuesday night, he was 5-1 since July 1 with a 2.56 ERA in 11 appearances, 10 of them as a starter. He hasnt gotten the same attention as Justin Verlander or Michael Fulmer, but hes been a big reason the Tigers have been able to stay in the wild-card race.Thats why it was surprising when everything blew up in his face against the Minnesota Twins.Boyd gave up seven runs, eight hits and a walk in 3 2/3 innings as the Tigers lost 8-1.I was just out of sync, Boyd said. I wasnt right physically. I feel great, but my mechanics were off. I couldnt repeat my delivery, and thats a recipe for disaster.That cant happen at this time of year.The Tigers lost for the third time in 14 games against Minnesota, costing them precious ground in a crowded race for the AL wild-card spots. They are now two games behind the Blue Jays and the Orioles and tied with the Yankees.Kyle Gibson went eight innings for the Twins and didnt allow a run after Miguel Cabreras first-inning single. He did have to navigate one major jam. In the fourth, with the Twins up 7-1, he walked Tyler Collins and Erick Aybar to load the bases with two out.After a conference with pitching coach Neil Allen and catcher John Ryan Murphy, he threw three straight changeups to Jarrod Saltalamacchia. After two swinging strikes, Gibson got a routine pop fly to end the inning.Thats an offense that can put up runs in a hurry, he said. I wanted to limit them to zero or, at worst one. I had missed on seven straight heaters, so when Murph suggested the changeup, it sounded good to me.Gibson (6-9) threw a perfect fifth inning and never looked back. The win ended a four-start winless streak, including when Gibson allowed five runs in five innings to Detroit on Aug. 23.Jorge Polanco homered and drove in four runs and Brian Dozier added three more hits to his torrid second half.Dozier entered hitting .318 with 26 homers since the All-Star break. Hes hit safely in 17 consecutive games.Buck Farmer saved Detroits bullpen by pitching 4 1/3 scoreless innings, but nnow the Tigers long reliever will be unavailable for starts by Anibal Sanchez and Mike Pelfrey on Wednesday and Thursday.dddddddddddd. Sanchez has struggled all year, while Pelfrey will be pitching for the first time since July and is expected to be on a low pitch count.He was outstanding, and it helped us a ton, Tigers manager Brad Ausmus said. That frees up the rest of the bullpen for the next couple days.Boyd got into trouble quickly, allowing two runs before recording an out. Dozier led off with a base hit and Polanco blooped a double down the right-field line. Robbie Grossman lined Boyds 11th pitch of the night into center for a two-run single, but the Tigers defense prevented further damage.Kennys Vargas hit a hard grounder up the middle, but Jose Iglesias fielded it behind second and got off a backhanded flip toward the bag. Ian Kinsler caught it in his bare hand and threw in one motion to turn the double play.After Cabrera got the Tigers on the board, Polancos two-run homer gave the Twins a three-run lead in the third. Grossman followed with a double, giving the top three in Minnesotas order six hits in six plate appearances, including three doubles and a homer.Polanco had two shots at the triple he needed for the cycle but popped out and walked.TRAINERS ROOMTigers: Justin Upton didnt play after aggravating a calf injury on Monday. Upton, one of Detroits hottest hitters over the last three weeks, hopes to return within a day or two.OLYMPIAN IN THE HOUSEFor the second day in a row, a medalist from the 2016 Summer Olympics threw out the first pitch. After boxing gold medalist Claressa Shields did the honors on Monday, it was Canadian Shelina Zadorsky, who won bronze as a member of the womens soccer team after a college career at the University of Michigan.UP NEXTThe teams play the third of a four-game series Wednesday night, with Sanchez (7-13, 5.69) facing Minnesotas Tyler Duffey (8-11, 6.13). Sanchez has shown some signs of improvement, going 1-1 with a 3.34 ERA in his last five starts. ' ' '