Maurice Greene is an American former track and field sprinter who competed in the 60 meters, 100 meters, and 200 meters. He is a former 100 m world record holder with a time of 9.79 seconds. During the height of his career (1997–2004) he won four Olympic medals and was a five-time World Champion. This included three golds at the 1999 World Championships, a feat which had previously only been achieved by Carl Lewis and Michael Johnson and has since been equaled by three others. Maurice Greene (United States) set the men's 100 m world record of 9.79 in Athens, Greece on June 16, 1999. It stood 3.2 years, until Tim Montgomery's 9.78 on September 14, 2002. Wiki link