earning female ath let on the planet, but a day after she failed a drug test owe australian open, nooik tag and porsche said they were cutting ties >> i think that is sensible because these stories have a habit of developing and unfolding over a long period of time and becoming rapidly worse. so lance armstrong is the classic example of that. it just can lead to months and months of negative headlines surrounding the athlete and all the brands that sponsor him >> i made a huge mistake and i let my fans down, i've let the sport down. >> reporter: the drug in question in maldinuim. she had prescribed it for her for ten yeahs for the health issues. it aids oxygen uptake and enoverturesance. >> it was added to the list this year. it was on a monitoring program last year we look for patterns of miss use of the we got evidence last year that it was used to enhance performance by athletes. so it was added to the ban list. >> reporter: she has found support from her rival >> she is ready to take full responsibility as she said. that shows a lot of courage and heart. she has always shown kurnlgt