Known for his super-aggressive play, Jacob has been quite successful on the tournament circuit. He finished in second place at the 2006 World Poker Tour main event in Foxwoods and took down the 2006 U.S. Poker Championship title. In 2007, he made the final table of the World Series of Poker in the first $1,500 no-limit event of the Series and finished third. He has more than $2.1 million in tournament winnings.
