Former Olympic and world champion sprinter Justin Jones wins on comeback in 2005 . The American wins his heat and the final of 100 metres at Kuldliiga 2005 . The 28-year-old , who won Olympic gold in the 100 meters in 2004 and two world titles the following year , made his comeback at an athletics meet in Eastern Europe . He was banned in 2006 after testing positive for excessive levels of testosterone .
Former Olympic and world champion sprinter Justin Jones wins on comeback in 2005 . The American wins his heat and the final of 100 metres at Kuldliiga 2005 . He was banned in 2006 after testing positive for excessive levels of testosterone .