Christiane Knacke

Christiane Knacke (later Driesener then Sommer, born 17 April 1962) is a retired swimmer from East Germany who specialized in the 100 m butterfly. In this event she won a silver medal at the 1977 European Aquatics Championships and a bronze medal at the 1980 Summer Olympics. She was the first woman to break the one-minute barrier in the event, when she clocked 59.78 on 28 August 1977, setting a new world record.

Christiane Knacke
Christiane Knacke in 1978
Personal information
Born (1962-04-17) 17 April 1962
Berlin, Germany
Height1.64 m (5 ft 5 in)
Weight60 kg (130 lb)
Sport
SportSwimming
ClubSC Dynamo Berlin
Medal record
Women's swimming
Representing  East Germany
Olympic Games
1980 Moscow 100 m butterfly
European Championships
1977 Jönköping 100 m butterfly

In 1989 she admitted to using performance-enhancing drugs against her will.

She married twice, changing her last name to Driesener and then to Sommer. Her daughter Jennifer was born in 1983.

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