Christiane Knacke (later Driesener then Sommer, born 17 April 1962) is a retired

swimmer Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water (e.g., in a sea or lake). Competitive swimming is one of the most popular Olympic ...

from

East Germany East Germany, officially the German Democratic Republic (GDR; german: Deutsche Demokratische Republik, , DDR, ), was a country that existed from its creation on 7 October 1949 until its dissolution on 3 October 1990. In these years the state ...

who specialized in the 100 m butterfly. In this event she won a silver medal at the

1977 European Aquatics Championships The 1977 European Aquatics Championships were held at the swimming complex Rosenlundsbadet in the southern Swedish city of Jönköping, from 14 August to 21 August. Besides swimming, there were titles contested in diving, the women's event of syn ...

and a bronze medal at the

1980 Summer Olympics The 1980 Summer Olympics (russian: Летние Олимпийские игры 1980, Letniye Olimpiyskiye igry 1980), officially known as the Games of the XXII Olympiad (russian: Игры XXII Олимпиады, Igry XXII Olimpiady) and commo ...

. 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. 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.

References

1962 births Living people Swimmers from Berlin People from East Berlin German female swimmers German female butterfly swimmers Swimmers at the 1980 Summer Olympics Olympic swimmers of East Germany Olympic bronze medalists for East Germany Place of birth missing (living people) World record setters in swimming Olympic bronze medalists in swimming Medalists at the 1980 Summer Olympics European Aquatics Championships medalists in swimming German sportspeople in doping cases Doping cases in swimming 20th-century German women {{Germany-swimming-Olympic-medalist-stub