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. Muhammad Wilkerson Packers Jersey . 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. The IOC also stores Olympic doping samples for 10 years to allow for retesting when new methods become available. Packers Jerseys . The Yankees made the moves before Tuesdays game against Baltimore. Robertson was listed retroactive to Monday. Robertson posted two saves in three games as the replacement for retired Yankees closer Mariano Rivera before getting hurt. Custom Packers Jerseys . The Detroit Tigers closer blew a three-run lead in the ninth inning Wednesday night against the Dodgers. http://www.shoptheofficialpackers.com/Elite-Deshone-Kizer-Packers-Jersey/ .A. Dickey earned an American League Gold Glove on Tuesday to become the first Toronto Blue Jays pitcher to win the award.CHARLOTTE, N.C. -- Tony Stewart has driven a sprint car again, roughly 10 months after the accident that sidelined the three-time NASCAR champion with a broken leg. Stewart posted several pictures to his new Twitter account of a car he drove Monday. Its not clear where the test session occurred. Stewart broke his leg in a crash in a sprint car race in Iowa last August that sidelined him until Februaryy preparations for NASCARs season-opening Daytona 500. Tramon Williams Packers Jersey. Stewart says on Twitter that driving the car again "was a huge day for me." In reply to a fan, he acknowledges that he indeed had butterflies, "but it felt like an old pair of shoes." He also posted that the car had safety improvements to the torque tube to prevent an injury like the one he suffered. Cheap Heat Jerseys Cheap Bucks Jerseys Cheap Timberwolves Jerseys Cheap Pelicans Jerseys Cheap Knicks Jerseys Cheap Thunder Jerseys Cheap Magic Jerseys Cheap 76ers Jerseys Cheap Suns Jerseys Cheap Blazers Jerseys Cheap Sacramento Kings Jerseys Cheap Spurs Jerseys Cheap Raptors Jerseys Cheap Jazz Jerseys Cheap Wizards Jerseys ' ' '