You can help expand this article with text translated from the corresponding article in German. (April 2022) Click [show] for important translation instructions.
View a machine-translated version of the German article.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must follow the LLM translation guideline, revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Christiane Knacke]]; see its history for attribution.
You may also add the template {{Translated|de|Christiane Knacke}} to the talk page.
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.[1] 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.[2]
In 1989 she admitted to using performance-enhancing drugs against her will.[2]
She married twice, changing her last name to Driesener and then to Sommer.[1] Her daughter Jennifer was born in 1983.[2]
