women 100m

Shelly-Ann Fraser-Pryce of Jamaica competes during the Women's 100m Round 1 on Day 7 of the Rio 2016 Olympic Games at the Olympic Stadium on August 12, 2016 in Rio de Janeiro, Brazil.

A general view of the action during the Women's 100m Round 1 on Day 7 of the Rio 2016 Olympic Games at the Olympic Stadium on August 12, 2016 in Rio de Janeiro, Brazil.

1988: Evelyn Ashford of the United States runs in a race during the Summer Olympics in Seoul, South Korea. Mandatory Credit: Joe Patronite /Allsport

1 Oct 1988: Evelyn Ashford (centre) of the USA and M. Gohr (right) of the German Democratic Republic in action during the 4x100 Metres Relay event at the 1988 Olympic Games in Seoul, South Korea. The USA Team won the gold medal and the German DemocraticRepublic Team won the silver medal in this event. \ Mandatory Credit: Bob Martin/Allsport

28 Jul-12 Aug 1984: Evelyn Ashford (left) of the USA comforts a team mate after winning the gold medal in the 100 metres event during the 1984 Olympic Games at the Olympic Stadium in Los Angeles, USA. Ashford won the event with a time of 10.97 seconds.\ Mandatory Credit: Tony Duffy/Allsport

1984: Evelyn Ashford of the United States waves during the Summer Olympics at the Los Angeles Memorial Coliseum in Los Angeles, California. Mandatory Credit: Tony Duffy /Allsport