Calvin Smith is a former sprint track and field athlete from the United States. He is a former world record holder in the 100-meter sprint with 9.93 seconds in 1983 and was twice world champion over 200 metres, in 1983 and 1987. He became Olympic champion in the 4 × 100-meter relay in 1984. He was born in Bolton, Mississippi. Calvin Smith (United States) set the men's 100 m world record of 9.97 in Zürich, Switzerland on August 24, 1983. It stood 8 months, until Mel Lattany's 9.96 on May 5, 1984. Wiki link