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. 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. He is equally prolific in live cash games, and is a regular in the
Big Game, the high-stakes cash game at the
Bellagio. Antonius appeared on the third to sixth seasons of
GSN's
High Stakes Poker. Patrik was involved, along with
Sammy Farha, in the show's largest ever pot; it totaled $998,800. After a preflop raise and re-raise the flop came ; Antonius held for top pair and Farha held , giving him two over-cards and a flush draw. Sammy called Patrik's all-in raise instantly and the two agreed to run the turn and river four times. Though Sammy's hand was a slight favorite, Patrik won three of the four runs and collected $749,100. In another sizable pot on High Stakes Poker, Patrik went up against
Jamie Gold. Jamie had versus Patrik's . Patrik raised to $4,000 preflop with Jamie reraising to $14,000, after declaring that his hole cards felt "like aces". The flop came out , giving Patrik an inside straight draw. Jamie bet $15,000 into a $30,800 pot, which Patrik called. The turn was the , giving Patrik a straight and Jamie a set of kings. Patrik bet $45,000 into the pot, which Jamie raised all in. Patrik immediately called making the pot worth $743,800. The players agreed to run the river three times. Despite being a 77%-23% favorite, Patrik won only the last of the three times, as Jamie hit a full house on the first two. At the time, it was the largest pot ever on High Stakes Poker. Antonius has since lost a pot of almost $600,000 to
Tom Dwan on an episode of the
Poker After Dark high-stakes cash game. Tom straddled the hand to $1,200 and Patrik was first to act having pocket 10s, with which he raised. Tom reraised the hand with pocket kings and Patrik called. The flop gave Patrik a set of tens and he bet $27,000, which Tom called. The turn was a king, giving Tom a set of kings. Patrik bet $59,000 which led to Dwan going all-in for over $200,000. Patrik called, making the pot almost $600,000. They ran it twice, with Patrik losing both. The hand had the largest pot in the history of Poker After Dark. In November 2009, Antonius won the biggest pot in online poker history, $1,356,946 against
Viktor Blom, who was at the time known only by his Full Tilt Poker moniker, Isildur1. 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 and Rob Yong called on the button with . Antonius three-bet the small blind to $30,000 with . Persson and Yong called as the flop landed . 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 and Antonius bet $150,000. Persson moved all-in and Antonius called all-in for just over $520,000. The river landed the and Antonius won the biggest pot in U.S. poker stream history. ==Personal life==