Hac Dang has accumulated millions of dollars playing online poker under the handle 'trex313' at Full Tilt Poker. Hac's brother, Di Dang (aka 'Urindanger') has also enjoyed significant profits engaging in poker online. A tight, somewhat passive player at the higher stakes, Hac Dang humbly credits much of his success to bankroll management, confessing that he doesn't consider himself an exceptional poker player.

Born in Virginia, Hac 'trex313' Dang attended UVA, where he earned a degree in mechanical engineering, despite having already accumulated millions of dollars playing online poker. His parents felt it was very important that Hac complete his education, and Hac followed through respectfully. Hac and his brother purchased a new home in Virginia for their whole family, which includes their parents and three younger siblings, with some of the money they earned playing online poker.

Hac decided to try his hand at online poker when he was inspired by Chris Moneymaker's unexpected win at the 2003 WSOP Main Event. At Party Poker, Hac and Di would take turns striving to surpass the other's performance, competitively moving further up in stakes. Eventually, they opted to cease their rivalry, choosing instead to pool their bankroll and work together to play a stronger game at higher stakes. Soon, the Dang brothers were competing in Full Tilt's $200/$400 cash games, ultimately moving on to $500/$1,000.

While Hac 'trex313' Dang is best known as a high stakes, online cash game player, he has resolved to enter the WSOP in Las Vegas each year. In 2009 he placed 98th in the WSOP Main Event for $47,003. A stark contrast to the $2,641,250 Hac raked in playing online cash games that same year. Dang has expressed that being confined to a seat twelve hours a day for the Main Event is quite grueling, stating that if he had to play live tournaments more than once a year his “head would probably explode.”

Drawn mainly to high level cash games, 'trex313' frequents Pot Limit Omaha and No Limit Hold'em. He is often found competing against the likes of Phil Ivey, Tom 'durrrr' Dwan, Brian Townsend, David Benyamine and Ilari 'Ziigmund' Sahamies at Full Tilt Poker.