No, not this Dan O'Brien; we're referring to the Dan O'Brien pictured here. Not long ago, O'Brien was sitting with around 110,000 in chips and we recently counted him at 650,000. It only takes a few hands of watching him play to understand how he's able to accumulate so many chips so fast. A recent flyby of his table produced back-to-back hands in which he came over the top of preflop raisers, winning both.
Notably, O'Brien finished 33rd in the 2008 Doyle Brunson Five Diamond World Poker Classic back in December, scoring a $36,000 payday.