About Tyler Hamilton:
Tyler Hamilton is an American former professional road bicycle racer. He is the only American rider to win one of the Five Monuments of Cycling. Hamilton became a professional cyclist in 1995 with the US Postal Service cycling team. He was a teammate of Lance Armstrong during the 1999, 2000 and 2001 Tours de France, where Armstrong won the Yellow jersey. He was a key asset for Armstrong, being a very good climber as well as time-trialist. Hamilton appeared at the 2000 and 2004 Summer Olympics. In 2004, he won a gold medal at the individual time trial. The first doping test after his Olympic victory gave a positive result, but because the backup sample was frozen, no doping offence could be proven. After he failed further doping tests at the 2004 Vuelta a España, Hamilton was suspended for two years from the sport.