[2] Mercier is a member of Team PokerStars Pro and was named the Bluff Magazine Player of the Year for 2009.

His first was at the EPT San Remo in season 4 where he won the event earning €869,000 ($1,372,893) with a final table that included online professional poker players, and Team PokerStars Pro's Dario Minieri (3rd) and William Thorson (6th).

[12] The final table included runner-up John Juanda, who had recently won the 2008 World Series of Poker Europe Main Event.

Other notable contestants at the final table were online pros Mike "SirWatts" Watson and Isaac Haxton as well as professionals Scotty Nguyen, David Benyamine and Isabelle Mercier.

[14][15][16][17][18][19] In addition to his tournament victories, Mercier has made the final table twice at the World Series of Poker Europe Main Event, finishing 4th in 2009 for £267,267 and 8th in 2012 for €84,672.