, it vindicated the whistleblowers ' stance -- as well as Walsh and his co-author Frenchman Pierre Ballester . Irish journalist David Walsh spent over a decade pursuing Lance Armstrong . The former cyclist was banned from cycling for life in 2011 after he admitted to using performance-enhancing drugs and blood transfusions during his career. His co-authored 2004 book LA Confidential enraged the American cyclist . Armstrong apologized to Walsh during his 2012 televised confession .
Irish journalist David Walsh spent over a decade pursuing Lance Armstrong . The former cyclist was banned from cycling for life in 2011 after he admitted to using performance-enhancing drugs and blood transfusions during his career. His co-authored 2004 book LA Confidential enraged the American cyclist . Armstrong apologized to Walsh during his 2012 televised confession .