He played for the Berlin Junior Polar Bears in the German Oberliga from 2005 to 2008. During that time Rupprich also played for Germany in the 2006 World Junior A Challenge, 2007 IIHF World U18 Championships, 2008 World Junior A Challenge, and the 2009 World Junior Ice Hockey Championships. Rupprich turned pro with the Roosters in 2008.
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