He’s won two Championship bracelets and been heads-up in a third, he's leading the Player of the Year race by a mile and he's undoubtedly proved he's a brilliant player.
But even he gets lucky sometimes, too.
Among poker players, the $10k HORSE Championship is one of the highest-rated tournaments of the whole series. Only great all-round players can make it here as there are five different games to be played.
On the final day of this one there were 14 players left fighting for the bracelet and one of them is Mercier, on an incredible run over the previous week.