Tyler Hamilton is a former American 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 Tour de France, where Armstrong won the Yellow jersey. Hamilton appeared at the 2000 and 2004 Summer Olympics. In 2004, he won a gold medal at the time trial. The first doping test 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 Espa�a, Hamilton was suspended for two years. Hamilton came back after his suspension and became national road race champion in 2008. In 2009, Hamilton failed a doping test again, and was banned for eight years, which effectively caused him to retire. In July 2010, he was subpoenaed to appear before a grand jury for the use of performance enhancing drugs in cycling. In May 2011, Hamilton admitted that he had used banned substances in competition, and returned his gold medal. 

March 1st, 1971 in Marblehead (Age 53)