At the 2010 PokerStarsSpring Championship of Online Poker $1,050 No Limit Hold'em Main Event - M, Polychronopoulos was among the final three players who brokered a chop yielding him $418,500 when he finished third. In addition to his WSOP success, he has won some major online tournaments online at Full Tilt Poker. On September 13, 2010, he won the "Full Tilt 1K Monday" for a $98,750 prize in the $1,000+$60 buy-in event against a field of 395 contestants. He had previously won the 560-person $500 + $35 January 29, 2010, Friday Night Fight No-limit Hold'em Bounty event on Full Tilt for a prize of $56,000.
Polychronopoulos was born in Southampton, New York and resides in Springs, New York, but his parents come from Greece. Polychronopoulos is a former restauranteur. When he wins World Series of Poker bracelets, the Greek National Anthem is played. Athanasios, which is Greek, translates to either "immortal" or "eternal life". As of 7 July 2013[update], the twenty-six letters in his full name make it the longest of anyone to ever win a World Series of Poker bracelet.