Steffen Christian Sontheimer (born 13 September 1990) is a German professional poker player, originally from Gernsbach, Germany who focuses on poker tournaments and cash games. He plays online on PokerStars under the alias go0se.core!.[1]
Poker
Sontheimer plays online poker under the alias "go0se.core!" on PokerStars (where he had the supernova elite status for two years) and "Partygo0se" on partypoker.
He decided to become a professional poker player during a trip to Canada to play Scoops in May 2014 alongside Reiner Kempe, Fedor Holz, and a few others.[2]
Sontheimer first cashed in live tournament in the summer of 2015. One year later he started competing in high roller tournaments.[3] Professional poker player Fedor Holz, predicted that 2017 would be a "breakout year" for Sontheimer.[1] Later that year Sontheimer won the inaugural Poker Masters Purple Jacket winning $2,733,000 in the process.[4]
In 2017, he took down the very first Poker Masters Purple Jacket, the grand prize of the new high roller tournament series.[5]
In 2018, Sontheimer won the Caribbean Poker Party $250,000 Super High Roller Championships earning him $3,685,000.[6]
Sontheimer helped poker player Kitty Kuo improve her game. He has been described as a "crusher".[7]
Sontheimer along with Holz is a shareholder of No Limit Gaming, an esports organisation founded by Stefan Schillhabel. He regularly streams poker for the organization.
He is a member of the poker and e-sports team NoLimitGG.
As of August 2020, Sontheimer is 6th on the German all-time money list with career live tournament winnings of over $13,700,000.[8]