Former cycling teammate to Lance Armstrong, Tyler Hamilton says Armstrong used performance enhancing drugs, and intimidated teammates to do the same.

Hamilton spoke on Newstalk1010's Friendly Fire with Ryan Doyle and John Downs on Thursday, and admitted me made poor choices, and takes full responsibility for what he's done.

Hamilton is one of 11 former teammates of Armstrong to come out and admit that doping was rampant, and still is rampant in European cycling.

He says the last time he talked to Lance was in Colorado in a restaurant, when the owner of the restaurant called Armstrong and told him Hamilton was there.

Armstrong showed up with his 'posse', a group of friends to try and intimidate Hamilton.

It was then that Armstrong told Hamilton he was going to make his life a living hell, both in the courtroom and out of it.

Hamilton talked on Friendly Fire about how much Sheryl Crow knew about Armstrong's alleged drug use, and he didn't know for sure, but suggested that she must have known.