SOCHI, Russia -- A top German biathlete and an Italian bobsledder were kicked out of the Sochi Olympics on Friday in the first doping cases of the Winter Games. Former two-time Olympic gold medallist Evi Sachenbacher-Stehle tested positive for the stimulant methylhexanamine in both her "A" and "B" samples, the German Olympic Committee said. The committee said she has been removed from the team and was being sent home. Sachenbacher-Stehle -- winner of two golds and three silvers in cross-country skiing at previous games -- blamed the positive test on a nutritional supplement and said she had never knowingly taken performance-enhancing drugs. "I am going through the worst nightmare that you can imagine, because I am unable to explain at all how there could be a positive test," she said in a statement. The Italian Olympic Committee, meanwhile, announced that bobsledder William Frullani was ejected from the games after testing positive for the banned stimulant dimetylpentylamine in the athletes village on Tuesday. Frullani, who had not competed yet, asked for a backup test that "confirmed the positive result, resulting in his exclusion from the Italian delegation," CONI said. The IOC declined to comment, citing confidentiality of ongoing anti-doping procedures. Sachenbacher-Stehle, who switched from cross-country to biathlon two years ago, competed in five events in Sochi but did not win any medals. Her best results were two fourth-place finishes, in the 12.5K mass start and the mixed relay. The 33-year-old German was tested after Mondays mass start race. Her backup sample was tested on Friday and confirmed the original finding. Her expulsion from the games was announced after she appeared before an IOC disciplinary commission on Friday afternoon. Sachenbacher-Stehle had been left off Germanys top-ranked womens relay team before Friday nights 4x6-kilometre relay. The team finished 11th. Franziska Hildebrand, who skied the third leg for Germany, said the team was told about the doping case earlier in the day. "We are totally shocked," Hildebrand said. Methylhexanamine is classified on the World Anti-Agencys prohibited list as a "specified stimulant," a group of substances that are more susceptible to inadvertent use and can carry reduced penalties. Sachenbacher-Stehle said she had her nutritional supplements checked in a lab or cleared by the manufacturer before the games. "At the moment I can only assure all involved that I never knowingly took banned substances," she said. Any further sanctions outside of the Olympics are up to the International Biathlon Union. The German could face a ban from the sport for a year or more. Michael Vesper, chief of German Olympic body DOSB, said athletes have been repeatedly warned about supplements that contain methylhexanamine. "The DOSB strives for a doping-free sport and a zero tolerance policy," he said in a statement. "We strive only for cleanly achieved performances. Every doping case is first of all a big disappointment. But it is also proof that that control system works." Stefan Schwarzbach, spokesman for the German biathlon and cross-country teams, said a contaminated supplement is a possible explanation for Sachenbacher-Stehles positive test. "We are not sure if its really from an unproven, or dirty, supplement," he said. " We really dont know." "It really seems that it is a mistake," Schwarzbach added. "And she has to handle the consequences." As a cross-country skier, Sachenbacher-Stehle won gold medals in the team sprint at the 2010 Vancouver Olympics and 4x5K relay at the 2002 Salt Lake City Games. She won silver medals in Salt Lake, Vancouver and at the 2006 Turin Games. The only previous German athlete sanctioned for doping at a Winter Olympics was hockey player Alois Schloder, who was disqualified from the 1972 Sapporo Games after a positive test for ephedrine. German-born cross-country skier Johan Muehlegg was competing for Spain in 2002 when he was caught doping and stripped of one of his three gold medals at the Salt Lake City Olympics. In the Italian case, CONI told The Associated Press that it believed Frullani, a former decathlete, purchased the stimulant on the Internet from the United States, since it is not available in Italy. Dimethylamphetamine is also classified as a "specified stimulant" on the WADA list. Samuele Romanini will replace Frullani as the brakeman for the four-man bobsled race, which begins Saturday. The IOC is conducting 2,453 drug tests in Sochi, a record for the Winter Games. 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And this recent run of success also has general manager Bryan Murray re-thinking his plans for the near future with the March 5 trade deadline not too far away. RALEIGH, N.C. -- The Carolina Hurricanes hope they now have the leadership tandem in place to turn the franchise around. Bill Peters was introduced Friday as the Hurricanes new coach, the first big hire made by new Carolina general manager Ron Francis. Now its up to Peters to prove it was a shrewd move. Carolina has made three coaching changes since 2006 and has only one playoff appearance to show for it. "When I did my due diligence and went to look at rosters ... were not far off," Peters said. "I think theres lots of pieces here and its up to us and our coaching staff ... to max our group out." A few hours after Peters formal introduction, the Hurricanes made another addition to their management team, hiring 44-year-old Ricky Olczyk -- the younger brother of former NHL coach and current NBC Sports analyst Ed Olczyk -- as an assistant general manager. The younger Olczyk spent six years as Edmontons assistant GM and was the Oilers NHL liaison for all collective bargaining agreement matters. Peters replaces Kirk Muller, who was fired last month -- a week into Francis tenure as GM -- and went 80-80-27 in three seasons with no playoff berths. Instead of an established NHL head coach or a popular ex-player, Francis went with Peters -- a 48-year-old Detroit Red Wings assistant who has never been an NHL head coach but was in demand this off-season. Peters said he interviewed for two other jobs and Francis says he spoke to 10 candidates during "a pretty extensive search," narrowing that to a three-man short list before deciding on Peters and giving him a three-year contract. "You have to take the time to go through it and make sure you get the right guy," Francis said, "and thats what we did." What dazzled Francis was Peters attention to detail: He penned a booklet breaking down the team and brought it to his first interview with them, and his second one included a PowerPoint presentation, Francis said. "Hes extremely, extremely detailed," Francis said. "Hes going to communicate with our players. Our players are going to know where he stands, and theres no little detail that (will) be overloooked.dddddddddddd" From the outside, his challenge looks daunting: Making the Hurricanes a consistent playoff team. Muller couldnt do it in three years. Neither could Paul Maurice, at least during his second stint with the team. Even Peter Laviolette -- the only Carolina coach to hoist the Stanley Cup -- couldnt get the Hurricanes back to the post-season. Now Peters gets his chance to try to revive a club that has missed the playoffs in seven of the eight years since the Hurricanes won their only Stanley Cup in 2006. The lone post-season berth since that Cup run came in 2009, when the Hurricanes reached the Eastern Conference final in the first year of Maurices second term as coach. Peters plan is to address three glaring problems from last season: Starting games strong, producing more on the power play and winning more often at PNC Arena. Carolina was the leagues third-worst team with the man advantage and was just 18-17-6 at home. "Weve got to become a harder team to play against here in Raleigh," Peters said. His hiring caps about two months of turbulence in the Hurricanes organization. Francis, a Hall of Fame player who has been both an assistant coach and an assistant GM with Carolina, was moved up a rung on the organizations ladder and his mentor, Jim Rutherford, stepped aside after two decades -- and eventually wound up bolting to Pittsburgh to take over as the Penguins GM. Francis first big move came a week later when he fired Muller and put the players on notice that the responsibility for turning the team around is on them, too. After a 46-day search in which some recognizable names were floated, Francis plucked Peters from Mike Babcocks staff with the Red Wings. He spent the past three years working primarily with the Red Wings defencemen and penalty killers. Before joining the Red Wings staff, he coached Rockford of the AHL from 2008-11 and guiding that team to consecutive 40-win seasons. Eight of his Rockford players helped Chicago win the Cup in either 2010 or 2013, and he also coached Spokane (Washington) of the Western Hockey League for three seasons. 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