 Nyorai kupfuurira kweiyi ndima - Gruissem akatanga kutamba mitambo mhenyu muna 2009. Akapedza ari 28th mu 2011 World Series of Pokerkuwana mari inopfuura 240,000. Gruissems hombe mhenyu mutambo mari iri kuhwina 2014 European Poker Tour 25,000 High Roller chiitiko, kuwana 1,378,059. 