Nine more athletes, including six medal winners, were retroactively disqualified from the 2008 Beijing Olympics today after failing retests of their doping samples. The International Olympic Committee announced the decisions in the latest sanctions imposed on athletes whose stored samples came back positive after being retested with improved methods.Four athletes were stripped of silver medals and two of bronze medals in weightlifting, wrestling and women's steeplechase. Stripped of silver medals today were freestyle wrestlers Soslan Tigiev of Uzbekistan (66-74 kilogram division), Taimuraz Tigiyev of Kazakhstan (84-96 kg), weightlifters Olha Korobka of Ukraine (75 kg) and Andrei Rybakov of Belarus (85 kg).It's the second time Tigiev has been stripped of an Olympic medal for doping. He lost his bronze medal from the 74 kg event at the London Games after failing a drug test. The IOC stripped Beijing bronze medals from Russian steeplechaser Ekaterina Volkova and Belarusian weightlifterAnastasia Novikova (53 kg). The IOC recorded a total of 98 positive cases in recent resting of samples from Beijing and the 2012 London Olympics.