Irish journalist David Walsh spent over a decade pursuing Lance Armstrong . The Times writer was convinced from 1999 onwards he was doping . His co - authored 2004 book Cycling Confidential enraged the American cyclist . Armstrong apologized to Walsh during his 2012 televised interview .
Irish journalist David Walsh spent over a decade pursuing Lance Armstrong . Sunday Times writer was convinced from 1999 onwards he was doping . His co-authored 2004 book LA Confidential enraged the American cyclist . Armstrong apologized to Walsh during his 2012 televised confession .