A player must follow the proper order on every wagering round, whether it's the flop or the river,
and if he or she wishes to Muck a losing hand, he must do so face down on the table in front of the
dealer.
Showdown is the only occasion a player might consider to Muck in poker. After all of the first betting
rounds have
been completed in a real money poker online, it is actually the final act in a poker game.