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