Stephan Keller

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Stephan Keller (born 31 May 1979) is a Swiss footballer who currently plays for De Graafschap. Keller is a defender who was born in Zürich and made his debut in professional football, being part of the Neuchâtel Xamax squad in the 1999-2000 season. He also played for SC Kriens, FC Zürich, FC Aarau, Rot-Weiss Erfurt and RKC Waalwijk before joining De Graafschap.