Mezue ahịrịokwu na-esonụ: Gruissem malitere igwu egwu na asọmpi ndụ na 2009. Ọ gbara onye nke iri abụọ na asatọ na
2011 World Series of Poker na-enweta 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.