Demidov is one of the original "November Nine", having made the final table of the World Series of Poker (WSOP) Main Event in 2008. He reached the heads-up stage along with Peter Eastgate. He lost to Eastgate and took second place for $5,809,595. Demidov stated that he would share his winnings with a Russian financial supporter who took him to some previous tournaments, with the backer getting more than Demidov.
