Pedzisa mutsara unotevera: Gruissem akatanga kutamba mitambo mhenyu muna 2009. Akapedza ari wechi28 mu
2011 World Series of Poker inowana 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.