His brief video statement on his website and interview with Vanity Fair, however, left most other questions unanswered.
The official reason Armstrong gave was "in order to raise awareness of the global cancer burden".
But as with most things with the controversial Texan, there is more to the story than first meets the eye.
Within minutes, his lawyer, confidante and former manager at the Discovery team Bill Stapleton was saying, "We're not going to try to win second place." More...