With some moderate raising from an opponent preflop, Arnaud Mattern bet out 500 on a flop, called by an opponent in seat 2. He bet another 1,250 on the turn, which his opponent also called, but merely checked the river. His opponent checked behind, and Arnaud turned over . His opponent mucked, but Mattern guessed: "Tens?" he inquired from behind his aviators. His opponent let the very tiniest glimpse of an enigmatic smile cross his face...