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Carl Lewis of the United States (centre) celebrates winning the men's 4x100 relay during the World Athletics Championships in Helsinki, Finland, circa August 1983. (Photo by Professional Sport/Popperfoto/Getty Images)

Carl Lewis of the United States (centre) celebrates winning the men's 4x100 relay during the World Athletics Championships in Helsinki, Finland, circa August 1983. (Photo by Professional Sport/Popperfoto/Getty Images)

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HELSINKI, FINLAND - AUGUST 14: Marita Koch of East Germany celebrates after winning the women's 200 metres during the IAAF World Championships at the Olympic Stadium on August 14, 1983 in Helsinki, Finland. (Photo by Professional Sport/Popperfoto/Getty Images)

HELSINKI, FINLAND - AUGUST 14: Marita Koch of East Germany celebrates after winning the women's 200 metres during the IAAF World Championships at the Olympic Stadium on August 14, 1983 in Helsinki, Finland. (Photo by Professional Sport/Popperfoto/Getty Images)

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1983: Merlene Ottey of Jamaica in action during the 200 metres event at the World Championships at the Olympic Stadium in Helsinki, Finland. \ Mandatory Credit: Steve Powell/Allsport

1983:  Merlene Ottey of Jamaica in action during the 200 metres event at the World Championships at the Olympic Stadium in Helsinki, Finland. \ Mandatory Credit: Steve  Powell/Allsport

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Edwin Moses of the United States clears the hurdle on his way to winning the Men's 400 metres hurdles event during the IAAF World Championships in Athletics on 9th August 1983 at the Olympic Stadium, in Helsinki, Finland. (Photo by Bob Thomas/Getty Images)

Edwin Moses of the United States clears the hurdle on his way to winning the Men's 400 metres hurdles event during the IAAF World Championships in Athletics on 9th August 1983 at the Olympic Stadium, in Helsinki, Finland. (Photo by Bob Thomas/Getty Images)

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14 Aug 1983: Sergey Bubka of the Ukraine in action during the Pole Vault event at the 1983 World Championships in Helsinki, Finland. Bubka won the gold medal with a leap of 5.70 metres. \ Mandatory Credit: Tony Duffy/Allsport

14 Aug 1983:  Sergey Bubka of the Ukraine in action during the Pole Vault event at the 1983 World Championships in Helsinki, Finland. Bubka won the gold medal with a leap of 5.70 metres.  \ Mandatory Credit: Tony  Duffy/Allsport