A former team-mate of Lance Armstrong, who's accused of cheating his way to the top of the cycling world, says the seven-time Tour de France winner was part of a dark period of cycling.
In a long-awaited report the United States Anti-Doping Agency has released evidence linking Armstrong to the use of performance-enhancing drugs included financial payments, emails, scientific data, laboratory test results, and testimony from 11 former team-mates.
One of those former team-mates, Tyler Hamilton, says he witnessed Armstrong taking performancing enhancing drugs a number of times, but says it was the norm at the time.