After years of denial and ducking, Lance Armstrong finally came clean and admitted to using performance enhancing drugs during an interview with Oprah Winfrey.

The disgraced cycling champ sat down with Winfrey Thursday on her OWN network to address his use of drugs that included human growth hormone, testosterone and cortisone during a career that included seven straight Tour de France wins. 

"I'm a flawed character," said Armstrong of his past cheating, adding, ''I went and looked up the definition of cheat. And the definition is to gain an advantage on a rival or foe. I didn't view it that way. I viewed it as a level playing field.''

When Winfrey asked him whether or not it was humanly possible to win seven races in a row without help from performance-enhancing drugs, Armstrong replied, "Not in my view."

Livestrong, the cancer charity founded by Armstrong in 1997, issued a statement which read, "(We are) ''disappointed by the news that Lance Armstrong misled people during and after his cycling career, including us. Earlier this week, Lance apologized to our staff and we accepted his apology in order to move on and chart a strong, independent course."