Clean Winners was founded in 1997 by the former tennis professional Carl-Uwe Steeb and the tennis coach Stefan Schaffelhuber with the entrepreneur Hans-Dieter Cleven in order to offer a perspective for a better life to socially deprived children in Germany, especially with the help of sports. The non-profit organisation especially cares for children and youths who are daily confronted with the negative sides of life in their familial environment. Values like fairness, tolerance, respect, helpfulness, confidence, friendship, responsibility and commitment are transmitted through the collective sports experience in the group.

Currently, trained sports pedagogues and helpers take care of around 350 children at twelve Clean Winners locations all over Germany. They are especially using the infrastructure of tennis and sports grounds. The sports offer is broad, with tennis, badminton, football, hockey and more. Additionally, the staff offers collective weekend trips, homework assistance, computer classes and other activities. With idealism and commitment, numerous people care for the many little "Clean Winners".