Dee ihe ga-aga n'ihu maka paragraf a - Gruissem bidoro igwu egwuregwu ndụ na 2009. Ọ gbara onye nke iri abụọ na asatọ na 2011 World Series of Poker
na-akpata ihe karịrị $240,000. Gruissem kasị ukwuu ndụ ndorondoro ego na-emeri 2014 European Poker Tour € 25,000 High Roller omume, na-akpata $ 1,378,059.