Patrik Antonius, born December 13, 1980, is a Finnish professional poker player, former tennis player and coach, and model from Vantaa, Finland. He currently resides in Monte Carlo. Antonius was mentored by poker pro Marcel Luske as a member of Luske’s “Circle of Outlaws” and later advised by Jennifer Harman.

Antonius is a heads-up specialist. He is a regular high-stakes player online and one of the most successful, having won millions of dollars. He has played on Full Tilt under several nicknames, including Luigi66369, CryMeRiver9 and Finddagrind. Once Antonius became a member of “Team Full Tilt” he played under his real name. During his early career he also used screen names e.g. I_knockout_U, try_hrdr_fish and -ANTONIUS- on various other poker networks. Previously Antonius was one of a team of players associated with Martinspoker.com.

In February 2023, Antonius played on PokerGO’s No Gamble No Future cash game show. In No Gamble, No Future’s Cash of the Titans that was shot over three days, Antonius would win the biggest pot in U.S. poker stream history when he doubled up through Eric Persson in a pot totalling $1,978,000. With the stakes at $1,000 / $2,000 blinds and a $2,000 big blind ante, Persson raised to $7,000 in the cutoff with Q♥ 9♥ and Rob Yong called on the button with A♣ 2♣. Antonius three-bet the small blind to $30,000 with A♥ K♥. Persson and Yong called as the flop landed 3♥ 3♣ 8♥. Antonius bet out $40,000 and Persson raised to $140,000. Yong folded, but Antonius made it $250,000 and Persson called. The turn landed the A♠ and Antonius bet $150,000. Persson moved all-in and Antonius called all-in for just over $520,000. The river landed the J♠ and Antonius won the biggest pot in U.S. poker stream history.